cc: Remove contents_texture_manager from LayerTreeHost(Impl) and proxy.

cc/trees/thread_proxy.h

Index: cc/trees/thread_proxy.h
diff --git a/cc/trees/thread_proxy.h b/cc/trees/thread_proxy.h
index 48aa661d76d9209be733f4321dc4b9a0b4178e0b..e8a791b927ef49fa43f239738ba5cb4867838558 100644
--- a/cc/trees/thread_proxy.h
+++ b/cc/trees/thread_proxy.h
@@ -88,8 +88,6 @@ class CC_EXPORT ThreadProxy : public Proxy,
     explicit MainThreadOrBlockedMainThread(LayerTreeHost* host);
     ~MainThreadOrBlockedMainThread();
 
-    PrioritizedResourceManager* contents_texture_manager();
-
     LayerTreeHost* layer_tree_host;
     bool commit_waits_for_activation;
     bool main_thread_inside_commit;
@@ -105,10 +103,6 @@ class CC_EXPORT ThreadProxy : public Proxy,
 
     const int layer_tree_host_id;
 
-    // Copy of the main thread side contents texture manager for work
-    // that needs to be done on the compositor thread.
-    PrioritizedResourceManager* contents_texture_manager;
-
     scoped_ptr<Scheduler> scheduler;
 
     // Set when the main thread is waiting on a
@@ -207,8 +201,6 @@ class CC_EXPORT ThreadProxy : public Proxy,
   void SetVideoNeedsBeginFrames(bool needs_begin_frames) override;
   void PostAnimationEventsToMainThreadOnImplThread(
       scoped_ptr<AnimationEventsVector> queue) override;
-  bool ReduceContentsTextureMemoryOnImplThread(size_t limit_bytes,
-                                               int priority_cutoff) override;
   bool IsInsideDraw() override;
   void RenewTreePriority() override;
   void PostDelayedAnimationTaskOnImplThread(const base::Closure& task,