Backed out changeset 0c97af20bdad (bug 1699588) for causing android mda crashes in ShaderProgramOGL.

gfx/layers/opengl/TextureHostOGL.cpp

@@ -732,11 +732,6 @@ void SurfaceTextureHost::PushDisplayItems(wr::DisplayListBuilder& aBuilder,
   }
 }
 
-bool SurfaceTextureHost::SupportsExternalCompositing(
-    WebRenderBackend aBackend) {
-  return aBackend == WebRenderBackend::SOFTWARE;
-}
-
 ////////////////////////////////////////////////////////////////////////
 // AndroidHardwareBufferTextureHost
 

gfx/layers/opengl/TextureHostOGL.h

@@ -452,8 +452,6 @@ class SurfaceTextureHost : public TextureHost {
                         const Range<wr::ImageKey>& aImageKeys,
                         PushDisplayItemFlagSet aFlags) override;
 
-  bool SupportsExternalCompositing(WebRenderBackend aBackend) override;
-
   // gecko does not need deferred deletion with WebRender
   // GPU/hardware task end could be checked by android fence.
   // SurfaceTexture uses android fence internally,