Move output surface fallback from cc to embedders

content/test/web_layer_tree_view_impl_for_testing.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/test/web_layer_tree_view_impl_for_testing.h"
 
 #include "base/command_line.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/synchronization/lock.h"
 #include "cc/base/switches.h"
@@ skipping 139 matching lines @@
     const gfx::Vector2dF& elastic_overscroll_delta,
     float page_scale,
     float top_controls_delta) {
 }
 
 void WebLayerTreeViewImplForTesting::ApplyViewportDeltas(
     const gfx::Vector2d& scroll_delta,
     float page_scale,
     float top_controls_delta) {}
 
-void WebLayerTreeViewImplForTesting::RequestNewOutputSurface(
-    bool fallback) {
+void WebLayerTreeViewImplForTesting::RequestNewOutputSurface() {
   bool flipped_output_surface = false;
   layer_tree_host_->SetOutputSurface(
       make_scoped_ptr(new cc::PixelTestOutputSurface(
           cc::TestContextProvider::Create(), flipped_output_surface)));
 }
 
+void WebLayerTreeViewImplForTesting::DidFailToInitializeOutputSurface() {
+  RequestNewOutputSurface();
+}
+
 void WebLayerTreeViewImplForTesting::registerViewportLayers(
     const blink::WebLayer* overscrollElasticityLayer,
     const blink::WebLayer* pageScaleLayer,
     const blink::WebLayer* innerViewportScrollLayer,
     const blink::WebLayer* outerViewportScrollLayer) {
   layer_tree_host_->RegisterViewportLayers(
       // The scroll elasticity layer will only exist when using pinch virtual
       // viewports.
       overscrollElasticityLayer
           ? static_cast<const cc_blink::WebLayerImpl*>(
@@ skipping 19 matching lines @@
 
 void WebLayerTreeViewImplForTesting::registerSelection(
     const blink::WebSelectionBound& start,
     const blink::WebSelectionBound& end) {
 }
 
 void WebLayerTreeViewImplForTesting::clearSelection() {
 }
 
 }  // namespace content