cc: handling debug settings in new LayerTreeDebugState structure

cc/layer_tree_host_impl.h

Index: cc/layer_tree_host_impl.h
diff --git a/cc/layer_tree_host_impl.h b/cc/layer_tree_host_impl.h
index 81ce4c2addea244dae32a1b58bb9b63383ac2221..fd89d36d5d98c84986d9e16e1768d7cbb8061447 100644
--- a/cc/layer_tree_host_impl.h
+++ b/cc/layer_tree_host_impl.h
@@ -252,6 +252,9 @@ public:
     ResourceProvider* resourceProvider() const { return m_resourceProvider.get(); }
     Proxy* proxy() const { return m_proxy; }
 
+    void setDebugState(const LayerTreeDebugState& debugState) { m_debugState = debugState; }
+    const LayerTreeDebugState& debugState() const { return m_debugState; }
+
     class CC_EXPORT CullRenderPassesWithCachedTextures {
     public:
         bool shouldRemoveRenderPass(const RenderPassDrawQuad&, const FrameData&) const;
@@ -337,6 +340,7 @@ private:
     int m_scrollingLayerIdFromPreviousTree;
     bool m_scrollDeltaIsInViewportSpace;
     LayerTreeSettings m_settings;
+    LayerTreeDebugState m_debugState;
     gfx::Size m_layoutViewportSize;
     gfx::Size m_deviceViewportSize;
     float m_deviceScaleFactor;