Remove base::Callback from ContextProvider creation.

webkit/common/gpu/context_provider_in_process.h

Index: webkit/common/gpu/context_provider_in_process.h
diff --git a/webkit/common/gpu/context_provider_in_process.h b/webkit/common/gpu/context_provider_in_process.h
index 7953b304a9f6cabffc95b4bfcbb1a0e78f410e4d..2379dd29ce17ac91942c119188b364afd9b5e229 100644
--- a/webkit/common/gpu/context_provider_in_process.h
+++ b/webkit/common/gpu/context_provider_in_process.h
@@ -25,12 +25,8 @@ class GrContextForWebGraphicsContext3D;
 class WEBKIT_GPU_EXPORT ContextProviderInProcess
     : NON_EXPORTED_BASE(public cc::ContextProvider) {
  public:
-  typedef base::Callback<
-      scoped_ptr<WebGraphicsContext3DInProcessCommandBufferImpl>(void)>
-      CreateCallback;
-
   static scoped_refptr<ContextProviderInProcess> Create(
-      const CreateCallback& create_callback);
+      scoped_ptr<WebGraphicsContext3DInProcessCommandBufferImpl> context3d);
 
   // Calls Create() with a default factory method for creating an offscreen
   // context.
@@ -52,12 +48,10 @@ class WEBKIT_GPU_EXPORT ContextProviderInProcess
       OVERRIDE;
 
  protected:
-  ContextProviderInProcess();
+  ContextProviderInProcess(
+      scoped_ptr<WebGraphicsContext3DInProcessCommandBufferImpl> context3d);
   virtual ~ContextProviderInProcess();
 
-  bool InitializeOnMainThread(
-      const CreateCallback& create_callback);
-
   void OnLostContext();
   void OnSwapBuffersComplete();
   void OnMemoryAllocationChanged(