Delay activation/draw on GPU tile work completion

cc/test/fake_raster_buffer_provider.cc

Index: cc/test/fake_raster_buffer_provider.cc
diff --git a/cc/test/fake_raster_buffer_provider.cc b/cc/test/fake_raster_buffer_provider.cc
index 20c91fa6752c9f8dad7a7e9d8f8de1877be08d92..3a5db5f3a48f621fdb843b0228b906ff475841a4 100644
--- a/cc/test/fake_raster_buffer_provider.cc
+++ b/cc/test/fake_raster_buffer_provider.cc
@@ -38,6 +38,18 @@ bool FakeRasterBufferProviderImpl::CanPartialRasterIntoProvidedResource()
   return true;
 }
 
+bool FakeRasterBufferProviderImpl::IsResourceReadyToDraw(
+    ResourceId resource_id) const {
+  return true;
+}
+
+uint64_t FakeRasterBufferProviderImpl::SetReadyToDrawCallback(
+    const ResourceProvider::ResourceIdArray& resource_ids,
+    const base::Callback<void()>& callback,
+    uint64_t pending_callback_id) const {
+  return 0;
+}
+
 void FakeRasterBufferProviderImpl::Shutdown() {}
 
 }  // namespace cc