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 0aa250d685d0bd7e0601474c653111a85bff5faf..df185f2e6b0a0cc7907ee1d6aa5459f0700a6963 100644
--- a/cc/layer_tree_host_impl.h
+++ b/cc/layer_tree_host_impl.h
@@ -244,6 +244,9 @@ public:
     ResourceProvider* resourceProvider() const { return m_resourceProvider.get(); }
     Proxy* proxy() const { return m_proxy; }
 
+    void setSwitches(const LayerTreeSwitches& switches) { m_switches = switches; }
+    const LayerTreeSwitches& switches() const { return m_switches; }
+
     class CC_EXPORT CullRenderPassesWithCachedTextures {
     public:
         bool shouldRemoveRenderPass(const RenderPassDrawQuad&, const FrameData&) const;
@@ -329,6 +332,7 @@ private:
     int m_scrollingLayerIdFromPreviousTree;
     bool m_scrollDeltaIsInViewportSpace;
     LayerTreeSettings m_settings;
+    LayerTreeSwitches m_switches;
     gfx::Size m_layoutViewportSize;
     gfx::Size m_deviceViewportSize;
     float m_deviceScaleFactor;