compositor-worker: cc->blink mutation plumbing

content/renderer/gpu/render_widget_compositor.cc

 // Copyright (c) 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/renderer/gpu/render_widget_compositor.h"
 
 #include <stddef.h>
 #include <limits>
 #include <string>
 #include <utility>
@@ skipping 888 matching lines @@
     const gfx::Vector2dF& inner_delta,
     const gfx::Vector2dF& outer_delta,
     const gfx::Vector2dF& elastic_overscroll_delta,
     float page_scale,
     float top_controls_delta) {
   delegate_->ApplyViewportDeltas(inner_delta, outer_delta,
                                  elastic_overscroll_delta, page_scale,
                                  top_controls_delta);
 }
 
+void RenderWidgetCompositor::ApplyMutations(
+    const cc::LayerTreeMutations& mutations) {
+  delegate_->ApplyMutations(mutations);
+}
+
 void RenderWidgetCompositor::RequestNewOutputSurface() {
   // If the host is closing, then no more compositing is possible.  This
   // prevents shutdown races between handling the close message and
   // the CreateOutputSurface task.
   if (delegate_->IsClosing())
     return;
 
   bool fallback =
       num_failed_recreate_attempts_ >= OUTPUT_SURFACE_RETRIES_BEFORE_FALLBACK;
   scoped_ptr<cc::OutputSurface> surface(
@@ skipping 181 matching lines @@
 #endif
   return actual;
 }
 
 void RenderWidgetCompositor::SetPaintedDeviceScaleFactor(
     float device_scale) {
   layer_tree_host_->SetPaintedDeviceScaleFactor(device_scale);
 }
 
 }  // namespace content