Remove static thread pointers from CC

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 c574888d59cdc87bfd34b4d3583a0e5367c49c3d..b81c7ca08452f99c9657ac2e24f5dda8e1415f7d 100644
--- a/cc/layer_tree_host.h
+++ b/cc/layer_tree_host.h
@@ -74,7 +74,7 @@ struct CC_EXPORT LayerTreeSettings {
 };
 
 // Provides information on an Impl's rendering capabilities back to the LayerTreeHost
-struct RendererCapabilities {
+struct CC_EXPORT RendererCapabilities {
     RendererCapabilities();
     ~RendererCapabilities();
 
@@ -92,7 +92,7 @@ struct RendererCapabilities {
 
 class CC_EXPORT LayerTreeHost : public RateLimiterClient {
 public:
-    static scoped_ptr<LayerTreeHost> create(LayerTreeHostClient*, const LayerTreeSettings&);
+    static scoped_ptr<LayerTreeHost> create(LayerTreeHostClient*, const LayerTreeSettings&, scoped_ptr<Thread> implThread);
     virtual ~LayerTreeHost();
 
     void setSurfaceReady();
@@ -133,8 +133,9 @@ public:
 
     LayerTreeHostClient* client() { return m_client; }
 
-    // Only used when compositing on the main thread.
     void composite();
+
+    // Only used when compositing on the main thread.
     void scheduleComposite();
 
     // Composites and attempts to read back the result into the provided
@@ -212,9 +213,11 @@ public:
 
     HeadsUpDisplayLayer* hudLayer() const { return m_hudLayer.get(); }
 
+    Proxy* proxy() const { return m_proxy.get(); }
+
 protected:
     LayerTreeHost(LayerTreeHostClient*, const LayerTreeSettings&);
-    bool initialize();
+    bool initialize(scoped_ptr<Thread> implThread);
 
 private:
     typedef std::vector<scoped_refptr<Layer> > LayerList;
@@ -245,11 +248,11 @@ private:
     base::CancelableClosure m_prepaintCallback;
 
     LayerTreeHostClient* m_client;
+    scoped_ptr<Proxy> m_proxy;
 
     int m_commitNumber;
     RenderingStats m_renderingStats;
 
-    scoped_ptr<Proxy> m_proxy;
     bool m_rendererInitialized;
     bool m_contextLost;
     int m_numTimesRecreateShouldFail;