Don't use fallback frame sinks on Android

content/renderer/gpu/render_widget_compositor_unittest.cc

Index: content/renderer/gpu/render_widget_compositor_unittest.cc
diff --git a/content/renderer/gpu/render_widget_compositor_unittest.cc b/content/renderer/gpu/render_widget_compositor_unittest.cc
index 82f8f1c533770fe67232c9885b66de20ecdee32f..ee16f86de7714c107c04c698fe00963e2f1c89b6 100644
--- a/content/renderer/gpu/render_widget_compositor_unittest.cc
+++ b/content/renderer/gpu/render_widget_compositor_unittest.cc
@@ -292,6 +292,8 @@ TEST_F(RenderWidgetCompositorFrameSinkTest, FailOnceBind) {
   RunTest(false, 1, 1, 0);
 }
 
+// Android doesn't support fallback frame sinks. (crbug.com/721102)
+#ifndef OS_ANDROID
 TEST_F(RenderWidgetCompositorFrameSinkTest, FallbackSuccessNull) {
   RunTest(true,
           RenderWidgetCompositor::COMPOSITOR_FRAME_SINK_RETRIES_BEFORE_FALLBACK,
@@ -310,6 +312,7 @@ TEST_F(RenderWidgetCompositorFrameSinkTest, FallbackSuccessNormalSuccess) {
           RenderWidgetCompositor::COMPOSITOR_FRAME_SINK_RETRIES_BEFORE_FALLBACK,
           1, 1);
 }
+#endif
 
 }  // namespace
 }  // namespace content