Fix crash in Canvas2DLayerBridge flushing + reliability metrics

tools/metrics/histograms/histograms.xml

Index: tools/metrics/histograms/histograms.xml
diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml
index 2aa73027419491468cb74abe60ffea81a3f9e08d..ad30ab54298adad65ba16c488fcbe96754320c26 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -57727,6 +57727,8 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <int value="5" label="Unaccelerated2DCanvasImageBufferCreationFailed"/>
   <int value="6" label="GPUAccelerated2DCanvasImageBufferCreationFailed"/>
   <int value="7" label="DisplayList2DCanvasFallbackToRaster"/>
+  <int value="8" label="GPUAccelerated2DCanvasDeferralDisabled"/>
+  <int value="10" label="GPUAccelerated2DCanvasSurfaceCreationFailed"/>
 </enum>
 
 <enum name="CanvasHibernationEvent" type="int">
@@ -57742,6 +57744,7 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <int value="8" label="HibernationEndedWithSwitchToBackgroundRendering"/>
   <int value="9" label="HibernationEndedWithFallbackToSW"/>
   <int value="10" label="HibernationEndedWithTeardown"/>
+  <int value="11" label="HibernationAbortedBecauseNoSurface"/>
 </enum>
 
 <enum name="CAPSUpdaterStep" type="int">