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 31 matching lines @@
 #include "cc/trees/layer_tree_host.h"
 #include "cc/trees/remote_proto_channel.h"
 #include "components/scheduler/renderer/renderer_scheduler.h"
 #include "content/common/content_switches_internal.h"
 #include "content/common/gpu/client/context_provider_command_buffer.h"
 #include "content/public/common/content_switches.h"
 #include "content/renderer/input/input_handler_manager.h"
 #include "gpu/command_buffer/client/gles2_interface.h"
 #include "gpu/command_buffer/service/gpu_switches.h"
 #include "third_party/WebKit/public/platform/WebCompositeAndReadbackAsyncCallback.h"
+#include "third_party/WebKit/public/platform/WebCompositorMutations.h"
 #include "third_party/WebKit/public/platform/WebLayoutAndPaintAsyncCallback.h"
 #include "third_party/WebKit/public/platform/WebSize.h"
 #include "third_party/WebKit/public/web/WebKit.h"
 #include "third_party/WebKit/public/web/WebRuntimeFeatures.h"
 #include "third_party/WebKit/public/web/WebSelection.h"
 #include "third_party/WebKit/public/web/WebWidget.h"
 #include "ui/gl/gl_switches.h"
 #include "ui/native_theme/native_theme_switches.h"
 
 #if defined(OS_ANDROID)
@@ skipping 842 matching lines @@
     float page_scale,
     float top_controls_delta) {
   widget_->webwidget()->applyViewportDeltas(
       inner_delta,
       outer_delta,
       elastic_overscroll_delta,
       page_scale,
       top_controls_delta);
 }
 
+void RenderWidgetCompositor::ApplyMutations(
+    const cc::LayerTreeMutations& mutations) {
+  TRACE_EVENT0("compositor-worker", "RenderWidgetCompositor::ApplyMutations");
+  widget_->webwidget()->applyMutations(
+      static_cast<const blink::WebCompositorMutations&>(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 (widget_->host_closing())
     return;
 
   bool fallback =
       num_failed_recreate_attempts_ >= OUTPUT_SURFACE_RETRIES_BEFORE_FALLBACK;
   scoped_ptr<cc::OutputSurface> surface(widget_->CreateOutputSurface(fallback));
@@ skipping 205 matching lines @@
 #endif
   return actual;
 }
 
 void RenderWidgetCompositor::SetPaintedDeviceScaleFactor(
     float device_scale) {
   layer_tree_host_->SetPaintedDeviceScaleFactor(device_scale);
 }
 
 }  // namespace content