Add CompositingReasons to compositor layers.

cc/layers/layer_impl.h

 // Copyright 2011 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.
 
 #ifndef CC_LAYERS_LAYER_IMPL_H_
 #define CC_LAYERS_LAYER_IMPL_H_
 
 #include <string>
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
 #include "cc/animation/layer_animation_controller.h"
 #include "cc/animation/layer_animation_value_observer.h"
 #include "cc/base/cc_export.h"
 #include "cc/base/region.h"
 #include "cc/base/scoped_ptr_vector.h"
 #include "cc/input/input_handler.h"
+#include "cc/layers/compositing_reasons.h"
 #include "cc/layers/draw_properties.h"
 #include "cc/layers/layer_lists.h"
 #include "cc/layers/layer_position_constraint.h"
 #include "cc/layers/render_surface_impl.h"
 #include "cc/quads/render_pass.h"
 #include "cc/quads/shared_quad_state.h"
 #include "cc/resources/resource_provider.h"
 #include "skia/ext/refptr.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebFilterOperations.h"
 #include "third_party/skia/include/core/SkColor.h"
@@ skipping 164 matching lines @@
 
   void SetSublayerTransform(const gfx::Transform& sublayer_transform);
   const gfx::Transform& sublayer_transform() const {
     return sublayer_transform_;
   }
 
   // Debug layer name.
   void SetDebugName(const std::string& debug_name) { debug_name_ = debug_name; }
   std::string debug_name() const { return debug_name_; }
 
+  void SetCompositingReasons(CompositingReasons reasons) {
+      compositing_reasons_ = reasons;
+  }
+
+  CompositingReasons compositing_reasons() const {
+      return compositing_reasons_;
+  }
+
   bool ShowDebugBorders() const;
 
   // These invalidate the host's render surface layer list.  The caller
   // is responsible for calling set_needs_update_draw_properties on the tree
   // so that its list can be recreated.
   void CreateRenderSurface();
   void ClearRenderSurface();
 
   DrawProperties<LayerImpl, RenderSurfaceImpl>& draw_properties() {
     return draw_properties_;
@@ skipping 295 matching lines @@
   gfx::Vector2d sent_scroll_delta_;
   gfx::Vector2d max_scroll_offset_;
   gfx::Vector2dF last_scroll_offset_;
 
   // The global depth value of the center of the layer. This value is used
   // to sort layers from back to front.
   float draw_depth_;
 
   // Debug layer name.
   std::string debug_name_;
+  CompositingReasons compositing_reasons_;
 
   WebKit::WebFilterOperations filters_;
   WebKit::WebFilterOperations background_filters_;
   skia::RefPtr<SkImageFilter> filter_;
 
 #ifndef NDEBUG
   bool between_will_draw_and_did_draw_;
 #endif
 
   // Rect indicating what was repainted/updated during update.
@@ skipping 17 matching lines @@
   // Group of properties that need to be computed based on the layer tree
   // hierarchy before layers can be drawn.
   DrawProperties<LayerImpl, RenderSurfaceImpl> draw_properties_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_LAYER_IMPL_H_