General view of a COVID-19 testing centre amid the coronavirus disease outbreak, at Glasgow Airport, in Glasgow, Scotland April 29, 2020. Andrew Milligan/Pool via REUTERS ATTENTION EDITORS - PIXELLATIONS FROM SOURCE

Cars queue at a COVID-19 testing centre amid the coronavirus disease outbreak, at Glasgow Airport, in Glasgow, Scotland April 29, 2020. Andrew Milligan/Pool via REUTERS ATTENTION EDITORS - PIXELLATIONS FROM SOURCE

Cars queue at a COVID-19 testing centre amid the coronavirus disease outbreak, at Glasgow Airport, in Glasgow, Scotland April 29, 2020. Andrew Milligan/Pool via REUTERS ATTENTION EDITORS - PIXELLATIONS FROM SOURCE

Syrian defendant Anwar R. arrives at a court for the first trial of suspected members of Syrian President Bashar al-Assad's security services for crimes against humanity, in Koblenz, Germany, April 23, 2020. Thomas Lohnes/Pool via REUTERS ATTENTION EDITORS - PIXELLATIONS FROM SOURCE

Syrian defendant Anwar R. arrives at a court for the first trial of suspected members of Syrian President Bashar al-Assad's security services for crimes against humanity, in Koblenz, Germany, April 23, 2020. Thomas Lohnes/Pool via REUTERS ATTENTION EDITORS - PIXELLATIONS FROM SOURCE

Syrian defendant Anwar R. arrives at a court for the first trial of suspected members of Syrian President Bashar al-Assad's security services for crimes against humanity, in Koblenz, Germany, April 23, 2020. Thomas Lohnes/Pool via REUTERS ATTENTION EDITORS - PIXELLATIONS FROM SOURCE

Syrian defendant Anwar R. arrives at a court for the first trial of suspected members of Syrian President Bashar al-Assad's security services for crimes against humanity, in Koblenz, Germany, April 23, 2020. Thomas Lohnes/Pool via REUTERS ATTENTION EDITORS - PIXELLATIONS FROM SOURCE

Medical staff carry a patient infected with the COVID-19 onboard a medicalized TGV high speed train at the railway station in Strasbourg, France, April 3, 2020. PIXELLATIONS FROM SOURCE Patrick Hertzog/Pool via REUTERS

Medical staff carry a patient infected with the COVID-19 onboard a medicalized TGV high speed train at the railway station in Strasbourg, France, April 3, 2020. PIXELLATIONS FROM SOURCE Patrick Hertzog/Pool via REUTERS

Medical staff carry a patient infected with the COVID-19 onboard a medicalized TGV high speed train at the railway station in Strasbourg, France, April 3, 2020. PIXELLATIONS FROM SOURCE Patrick Hertzog/Pool via REUTERS

Medical staff carry a patient infected with the COVID-19 onboard a medicalized TGV high speed train at the railway station in Strasbourg, France, April 3, 2020. PIXELLATIONS FROM SOURCE Patrick Hertzog/Pool via REUTERS

Medical staff carry a patient infected with the COVID-19 onboard a medicalized TGV high speed train at the railway station in Strasbourg, France, April 3, 2020. PIXELLATIONS FROM SOURCE Patrick Hertzog/Pool via REUTERS

Medical staff take care of a patient infected with the COVID-19 at a medicalized TGV high speed train at the railway station in Strasbourg, France, April 3, 2020. PIXELLATIONS FROM SOURCE Patrick Hertzog/Pool via REUTERS

Medical staff take care of a patient infected with the COVID-19 onboard a medicalized TGV high speed train at the railway station in Strasbourg, France, April 3, 2020. PIXELLATIONS FROM SOURCE Patrick Hertzog/Pool via REUTERS

Medical staff carry a patient infected with the COVID-19 onboard a medicalized TGV high speed train at the railway station in Strasbourg, France, April 3, 2020. PIXELLATIONS FROM SOURCE Patrick Hertzog/Pool via REUTERS

Medical staff carry a patient infected with the COVID-19 towards a medicalized TGV high speed train at the railway station in Strasbourg, France, April 3, 2020. PIXELLATIONS FROM SOURCE Patrick Hertzog/Pool via REUTERS

Medical staff take care of a patient infected with the COVID-19 on board a medicalized TGV high speed train at the station in Strasbourg, France, April 3, 2020. PIXELLATIONS FROM SOURCE Patrick Hertzog/Pool via REUTERS

Medical staff instal patients infected with the COVID-19 onboard a TGV high speed train at the Gare d'Austerlitz train station, to evacuate some of the coronavirus disease patients from Paris region hospitals to Brittany, in Paris, France April 1, 2020. PIXELLATIONS FROM SOURCE Thomas Samson/Pool via REUTERS

Medical staff instal patients infected with the COVID-19 onboard a TGV high speed train at the Gare d'Austerlitz train station, to evacuate some of the coronavirus disease patients from Paris region hospitals to Brittany, in Paris, France April 1, 2020. PIXELLATIONS FROM SOURCE Thomas Samson/Pool via REUTERS

Medical staff embark a patient infected with the COVID-19 onboard a TGV high speed train at the Gare d'Austerlitz train station, to evacuate some of the coronavirus disease patients from Paris region hospitals to Brittany, in Paris, France April 1, 2020. PIXELLATIONS FROM SOURCE Thomas Samson/Pool via REUTERS

Medical staff embark a patient infected with the COVID-19 onboard a TGV high speed train at the Gare d'Austerlitz train station, to evacuate some of the coronavirus disease patients from Paris region hospitals to Brittany, in Paris, France April 1, 2020. PIXELLATIONS FROM SOURCE Thomas Samson/Pool via REUTERS

Medical workers take samples from patients at a coronavirus drive-in test centre at the fair grounds in Hanover, Germany, March 31, 2020, as the spread of the coronavirus disease (COVID-19) continues. ATTENTION EDITORS - PIXELLATIONS FROM SOURCE Peter Steffen/Pool via REUTERS

Medical workers take samples from patients at a coronavirus drive-in test centre at the fair grounds in Hanover, Germany, March 31, 2020, as the spread of the coronavirus disease (COVID-19) continues. ATTENTION EDITORS - PIXELLATIONS FROM SOURCE Peter Steffen/Pool via REUTERS

Medical workers take samples from patients at a coronavirus drive-in test centre at the fair grounds in Hanover, Germany, March 31, 2020, as the spread of the coronavirus disease (COVID-19) continues. ATTENTION EDITORS - PIXELLATIONS FROM SOURCE Peter Steffen/Pool via REUTERS

Medical workers take samples from patients at a coronavirus drive-in test centre at the fair grounds in Hanover, Germany, March 31, 2020, as the spread of the coronavirus disease (COVID-19) continues. ATTENTION EDITORS - PIXELLATIONS FROM SOURCE Peter Steffen/Pool via REUTERS

Medical workers take samples from patients at a coronavirus drive-in test centre at the fair grounds in Hanover, Germany, March 31, 2020, as the spread of the coronavirus disease (COVID-19) continues. ATTENTION EDITORS - PIXELLATIONS FROM SOURCE Peter Steffen/Pool via REUTERS

Medical workers take samples from patients at a coronavirus drive-in test centre at the fair grounds in Hanover, Germany, March 31, 2020, as the spread of the coronavirus disease (COVID-19) continues. ATTENTION EDITORS - PIXELLATIONS FROM SOURCE Peter Steffen/Pool via REUTERS

An Italian patient infected with coronavirus arrives at the Helios hospital in Leipzig, Germany, March 25, 2020, as the spread of the coronavirus disease (COVID-19) continues. ATTENTION EDITORS - PIXELLATIONS FROM SOURCE Hendrik Schmidt/Pool via REUTERS

An Italian patient infected with coronavirus arrives at the Helios hospital in Leipzig, Germany, March 25, 2020, as the spread of the coronavirus disease (COVID-19) continues. ATTENTION EDITORS - PIXELLATIONS FROM SOURCE Hendrik Schmidt/Pool via REUTERS

An Italian patient infected with coronavirus arrives at the Helios hospital in Leipzig, Germany, March 25, 2020, as the spread of the coronavirus disease (COVID-19) continues. ATTENTION EDITORS - PIXELLATIONS FROM SOURCE Hendrik Schmidt/Pool via REUTERS

The new Google Pixel 4 smartphone is displayed during a Google launch event in New York City, New York, U.S., October 15, 2019. REUTERS/Eduardo Munoz

The new Google Pixel 4 smartphones are displayed during a Google launch event in New York City, New York, U.S., October 15, 2019. REUTERS/Eduardo Munoz

Media take a look at the new Google Pixel 4 smartphone and accessories as they are displayed during a Google launch event in New York City, New York, U.S., October 15, 2019. REUTERS/Eduardo Munoz

A woman takes a look on the new Google Pixel 4 smartphone displayed during a Google launch event in New York City, New York, U.S., October 15, 2019. REUTERS/Eduardo Munoz

A woman takes a look on the new Google Pixel 4 smartphone displayed during a Google launch event in New York City, New York, U.S., October 15, 2019. REUTERS/Eduardo Munoz

Media take a look at the new Google Pixel 4 smartphone and accessories as they are displayed during a Google launch event in New York City, New York, U.S., October 15, 2019. REUTERS/Eduardo Munoz

Media take a look at the new Google Pixel 4 smartphone and accessories as they are displayed during a Google launch event in New York City, New York, U.S., October 15, 2019. REUTERS/Eduardo Munoz

The new Google Pixel 4 smartphone is displayed during a Google launch event in New York City, New York, U.S., October 15, 2019. REUTERS/Eduardo Munoz

The new Google Pixel 4 smartphone and accessories are displayed during a Google launch event in New York City, New York, U.S., October 15, 2019. REUTERS/Eduardo Munoz

The new Google Pixel 4 smartphone and accessories are displayed during a Google launch event in New York City, New York, U.S., October 15, 2019. REUTERS/Eduardo Munoz

A woman takes a look on the new Google Pixel 4 smartphone displayed during a Google launch event in New York City, New York, U.S., October 15, 2019. REUTERS/Eduardo Munoz

A woman takes a look on the new Google Pixel 4 smartphone displayed during a Google launch event in New York City, New York, U.S., October 15, 2019. REUTERS/Eduardo Munoz

A man holds new Google Pixel 4 smartphones as they are displayed during a Google launch event New York City, New York, U.S., October 15, 2019. REUTERS/Eduardo Munoz

The new Google Pixel 4 smartphone and accessories are displayed during a Google launch event in New York City, New York, U.S., October 15, 2019. REUTERS/Eduardo Munoz

Media take a look of the new Google Pixel 4 smartphone and accessories as they are displayed during a Google launch event in New York City, New York, U.S., October 15, 2019. REUTERS/Eduardo Munoz

Rick Osterloh of Google describes the new Pixel Buds at the Made by Google '19 event in the Manhattan borough of New York, October 15, 2019. REUTERS/Jefferson Siegel

Brenton Tarrant, charged for murder in relation to the mosque attacks, is seen in the dock during his appearance in the Christchurch District Court, New Zealand March 16, 2019. Mark Mitchell/New Zealand Herald/Pool via REUTERS. ATTENTION EDITORS - PICTURE PIXELATED AT SOURCE. SUSPECT FACE MUST BE PIXELATED. ONLY HIS FACE.

Brenton Tarrant, charged for murder in relation to the mosque attacks, is seen in the dock during his appearance in the Christchurch District Court, New Zealand March 16, 2019. Mark Mitchell/New Zealand Herald/Pool via REUTERS. ATTENTION EDITORS - PICTURE PIXELATED AT SOURCE. SUSPECT FACE MUST BE PIXELATED. ONLY HIS FACE.

Brenton Tarrant, charged for murder in relation to the mosque attacks, is lead into the dock for his appearance in the Christchurch District Court, New Zealand March 16, 2019. Mark Mitchell/New Zealand Herald/Pool via REUTERS. ATTENTION EDITORS - PICTURE PIXELATED AT SOURCE. SUSPECT FACE MUST BE PIXELATED. ONLY HIS FACE.

Brenton Tarrant, charged for murder in relation to the mosque attacks, is seen in the dock during his appearance in the Christchurch District Court, New Zealand March 16, 2019. Mark Mitchell/New Zealand Herald/Pool via REUTERS. ATTENTION EDITORS - PICTURE PIXELATED AT SOURCE. SUSPECT FACE MUST BE PIXELATED. ONLY HIS FACE.

Brenton Tarrant, charged for murder in relation to the mosque attacks, is seen in the dock during his appearance in the Christchurch District Court, New Zealand March 16, 2019. Mark Mitchell/New Zealand Herald/Pool via REUTERS. ATTENTION EDITORS - PICTURE PIXELATED AT SOURCE. SUSPECT FACE MUST BE PIXELATED. ONLY HIS FACE.

Brenton Tarrant, charged for murder in relation to the mosque attacks, is lead into the dock for his appearance in the Christchurch District Court, New Zealand March 16, 2019. Mark Mitchell/New Zealand Herald/Pool via REUTERS. ATTENTION EDITORS - PICTURE PIXELATED AT SOURCE. SUSPECT FACE MUST BE PIXELATED. ONLY HIS FACE.

Brenton Tarrant, charged for murder in relation to the mosque attacks, is lead into the dock for his appearance in the Christchurch District Court, New Zealand March 16, 2019. Mark Mitchell/New Zealand Herald/Pool via REUTERS. ATTENTION EDITORS - PICTURE PIXELATED AT SOURCE. SUSPECT FACE MUST BE PIXELATED. ONLY HIS FACE.

Venezuelan rock band Los Pixel arrive for the 2018 Latin Recording Academy Person of The Year Gala honoring Mana, a Mexican rock band, in Las Vegas, Nevada, U.S. November 14, 2018. REUTERS/Steve Marcus

ATTENTION EDITORS: THE FACE WAS PIXELATED BY SOURCE BECAUSE OF LEGAL REQUIREMENTS - A 94-year-old wheelchair-bound man appeared in court in Muenster, Germany, November 6, 2018, accused of helping to murder hundreds of people at a Nazi concentration camp during World War Two, in what is likely to be one of the last such trials. The man, a former guard in the SS paramilitary wing of Hitler's Nazis who cannot be named for legal reasons, has denied the accusations. Guido Kirchner/Pool via Reuters

ATTENTION EDITORS: THE FACE WAS PIXELATED BY SOURCE BECAUSE OF LEGAL REQUIREMENTS - A 94-year-old wheelchair-bound man appeared in court in Muenster, Germany, November 6, 2018, accused of helping to murder hundreds of people at a Nazi concentration camp during World War Two, in what is likely to be one of the last such trials. The man, a former guard in the SS paramilitary wing of Hitler's Nazis who cannot be named for legal reasons, has denied the accusations. Guido Kirchner/Pool via Reuters

ATTENTION EDITORS: THE FACE WAS PIXELATED BY SOURCE BECAUSE OF LEGAL REQUIREMENTS - A 94-year-old wheelchair-bound man appeared in court in Muenster, Germany, November 6, 2018, accused of helping to murder hundreds of people at a Nazi concentration camp during World War Two, in what is likely to be one of the last such trials. The man, a former guard in the SS paramilitary wing of Hitler's Nazis who cannot be named for legal reasons, has denied the accusations. Guido Kirchner/Pool via Reuters

Rick Osterloh, Google's hardware senior vice president, speaks during a news conference on the Google Pixel 3 third generation smartphone and other products in Manhattan, New York, U.S., October 9, 2018. REUTERS/Shannon Stapleton

Rick Osterloh, Google's hardware senior vice president, speaks during a news conference on the Google Pixel 3 third generation smartphone and other products in Manhattan, New York, U.S., October 9, 2018. REUTERS/Shannon Stapleton

Rick Osterloh, Google's hardware senior vice president, speaks during a news conference on the Google Pixel 3 third generation smartphone and other products in Manhattan, New York, U.S., October 9, 2018. REUTERS/Shannon Stapleton