mozilla-central: changeset 531711:4c53c244dba1049c7db3fa421e6888301d4ca202

author	Timothy Nikkel <tnikkel@gmail.com>
	Fri, 22 May 2020 09:15:15 +0000
changeset 531711	4c53c244dba1049c7db3fa421e6888301d4ca202
parent 531710	c60409cd0710b6584acc32d67e9205b6a9a57dba
child 531712	ccce96f9e591ea3427f5ee9d4d11e6a563541deb
push id	37442
push user	ncsoregi@mozilla.com
push date	Sat, 23 May 2020 09:21:24 +0000
treeherder	mozilla-central@bbcc193fe0f0 [default view] [failures only]
perfherder	[talos] [build metrics] [platform microbench] (compared to previous push)
reviewers	nical
bugs	1639975
milestone	78.0a1
first release with	nightly linux32 bbcc193fe0f0 / 78.0a1 / 20200523092124 / files nightly linux64 bbcc193fe0f0 / 78.0a1 / 20200523092124 / files nightly mac bbcc193fe0f0 / 78.0a1 / 20200523092124 / files nightly win32 bbcc193fe0f0 / 78.0a1 / 20200523092124 / files nightly win64 bbcc193fe0f0 / 78.0a1 / 20200523092124 / files
last release without	nightly linux32 92c11f0bf14b / 78.0a1 / 20200521214934 / files nightly linux64 92c11f0bf14b / 78.0a1 / 20200521214934 / files nightly mac 92c11f0bf14b / 78.0a1 / 20200521214934 / files nightly win32 92c11f0bf14b / 78.0a1 / 20200521214934 / files nightly win64 92c11f0bf14b / 78.0a1 / 20200521214934 / files

--- a/layout/generic/nsHTMLCanvasFrame.cpp
+++ b/layout/generic/nsHTMLCanvasFrame.cpp
@@ -277,17 +277,19 @@ class nsDisplayCanvas final : public nsP
             dest, mFrame->PresContext()->AppUnitsPerDevPixel());
 
         aManager->CommandBuilder().PushImage(
             this, canvasData->GetImageContainer(), aBuilder, aResources, aSc,
             bounds, bounds);
         break;
       }
       case CanvasContextType::NoContext:
-        return false;
+        break;
+      default:
+        MOZ_ASSERT_UNREACHABLE("unknown canvas context type");
     }
     return true;
   }
 
   virtual LayerState GetLayerState(
       nsDisplayListBuilder* aBuilder, LayerManager* aManager,
       const ContainerLayerParameters& aParameters) override {
     if (HTMLCanvasElement::FromNode(mFrame->GetContent())