cc: switch to new WebLayerTreeViewClient API for requesting font atlas

cc/layer_tree_host.h

Index: cc/layer_tree_host.h
diff --git a/cc/layer_tree_host.h b/cc/layer_tree_host.h
index 5056345d07c8fb6810413415eaf7fc2993842adf..a11135ca4395c076cbfad6d6c7049946fa7fea20 100644
--- a/cc/layer_tree_host.h
+++ b/cc/layer_tree_host.h
@@ -217,7 +217,6 @@ public:
     float deviceScaleFactor() const { return m_deviceScaleFactor; }
 
     void setShowFPSCounter(bool show);
-    void setFontAtlas(scoped_ptr<FontAtlas>);
 
     HeadsUpDisplayLayer* hudLayer() const { return m_hudLayer.get(); }
 
@@ -249,6 +248,7 @@ private:
     void setAnimationEventsRecursive(const AnimationEventsVector&, Layer*, base::Time wallClockTime);
 
     void createHUDLayerIfNeeded();
+    void createFontAtlasIfNeeded();
 
     bool m_animating;
     bool m_needsAnimateLayers;