[cc] Route LayerImpl::layerTreeHostImpl() calls through LayerTreeImpl

cc/layer_tree_host_unittest.cc

 // 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.
 
 #include "cc/layer_tree_host.h"
 
 #include "base/synchronization/lock.h"
 #include "cc/content_layer.h"
 #include "cc/content_layer_client.h"
 #include "cc/layer_impl.h"
@@ skipping 2635 matching lines @@
 public:
     static scoped_ptr<EvictionTestLayerImpl> create(LayerTreeImpl* treeImpl, int id)
     {
         return make_scoped_ptr(new EvictionTestLayerImpl(treeImpl, id));
     }
     virtual ~EvictionTestLayerImpl() { }
 
     virtual void appendQuads(QuadSink& quadSink, AppendQuadsData&) OVERRIDE
     {
         ASSERT_TRUE(m_hasTexture);
-        ASSERT_NE(0u, layerTreeHostImpl()->resourceProvider()->numResources());
+        ASSERT_NE(0u, layerTreeImpl()->resource_provider()->numResources());
     }
 
     void setHasTexture(bool hasTexture) { m_hasTexture = hasTexture; }
 
 private:
     EvictionTestLayerImpl(LayerTreeImpl* treeImpl, int id)
         : LayerImpl(treeImpl, id)
         , m_hasTexture(false) { }
 
     bool m_hasTexture;
@@ skipping 712 matching lines @@
     LayerTreeSettings settings;
     settings.maxPartialTextureUpdates = 4;
 
     scoped_ptr<LayerTreeHost> host = LayerTreeHost::create(&client, settings, scoped_ptr<Thread>());
     EXPECT_TRUE(host->initializeRendererIfNeeded());
     EXPECT_EQ(0u, host->settings().maxPartialTextureUpdates);
 }
 
 }  // namespace
 }  // namespace cc