cc: Remove cc::ContentLayerClient::PaintContents(SkCanvas*, ...).

cc/test/solid_color_content_layer_client.h

Index: cc/test/solid_color_content_layer_client.h
diff --git a/cc/test/solid_color_content_layer_client.h b/cc/test/solid_color_content_layer_client.h
index 5ad3599301f9dde16faa492abeb94a4b2f5727ba..c39d567c6f10a4d4872e3970541872299d07a2c6 100644
--- a/cc/test/solid_color_content_layer_client.h
+++ b/cc/test/solid_color_content_layer_client.h
@@ -16,9 +16,6 @@ class SolidColorContentLayerClient : public ContentLayerClient {
   explicit SolidColorContentLayerClient(SkColor color) : color_(color) {}
 
   // ContentLayerClient implementation.
-  void PaintContents(SkCanvas* canvas,
-                     const gfx::Rect& rect,
-                     PaintingControlSetting painting_control) override;
   scoped_refptr<DisplayItemList> PaintContentsToDisplayList(
       const gfx::Rect& clip,
       PaintingControlSetting painting_control) override;