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 ee8ac98ed142b8d0d22ab4c63b1065ffc4a205f7..55be2003d1dddccc7eb6f961d390da5d1be64e91 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;