Extend the expiration dates of four histograms.

GPU.SupportsDX12
GPU.D3D12FeatureLevel
Viz.DisplayCompositor.RootDamageRect.Underlay
Viz.DisplayCompositor.RootDamageRect.Overlay

Bug: 1149513, 1140045
Change-Id: If7abff2968708f2f4c234d87f55d6bb26b25c2ed
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2543184
Auto-Submit: Maggie Chen <magchen@chromium.org>
Reviewed-by: Weilun Shi <sweilun@chromium.org>
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Commit-Queue: Ilya Sherman <isherman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#828119}

tools/metrics/histograms/histograms_xml/gpu/histograms.xml

@@ -305,12 +305,12 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="GPU.D3D12FeatureLevel" enum="D3D12FeatureLevel"
-    expires_after="2020-12-01">
-  <owner>vmiura@chromium.org</owner>
+    expires_after="2021-12-01">
   <owner>magchen@chromium.org</owner>
+  <owner>zmo@chromium.org</owner>
   <summary>
     The maximum D3D12 feature level supported in the gpu drivers. It is recorded
-    15 seconds after the browser launch.
+    in the browser process 120 seconds after the browser launch.
   </summary>
 </histogram>
 
@@ -1060,12 +1060,12 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="GPU.SupportsDX12" enum="BooleanSupported"
-    expires_after="2020-12-01">
-  <owner>vmiura@chromium.org</owner>
+    expires_after="2021-12-01">
   <owner>magchen@chromium.org</owner>
+  <owner>zmo@chromium.org</owner>
   <summary>
-    This metric shows whether the GPU supports D3D12. It is recorded 120 seconds
-    after the browser launch.
+    This metric shows whether the GPU supports D3D12. It is recorded in the
+    browser process 120 seconds after the browser launch.
   </summary>
 </histogram>
 

tools/metrics/histograms/histograms_xml/others/histograms.xml

@@ -16037,7 +16037,7 @@ regressions. -->
 </histogram>
 
 <histogram name="Viz.DisplayCompositor.RootDamageRect.Overlay"
-    enum="BooleanOverlayDamageRect" expires_after="2021-03-15">
+    enum="BooleanOverlayDamageRect" expires_after="2021-12-01">
   <owner>magchen@chromium.org</owner>
   <owner>zmo@chromium.org</owner>
   <summary>
@@ -16046,7 +16046,7 @@ regressions. -->
 </histogram>
 
 <histogram name="Viz.DisplayCompositor.RootDamageRect.Underlay"
-    enum="UnderlayDamageRect" expires_after="2020-12-31">
+    enum="UnderlayDamageRect" expires_after="2021-12-01">
   <owner>magchen@chromium.org</owner>
   <owner>zmo@chromium.org</owner>
   <summary>