Break dependency of native_viewport_service on mojo::shell::Context

mojo/services/native_viewport/native_viewport_android.h

 // Copyright 2013 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.
 
 #ifndef MOJO_SERVICES_NATIVE_VIEWPORT_NATIVE_VIEWPORT_ANDROID_H_
 #define MOJO_SERVICES_NATIVE_VIEWPORT_NATIVE_VIEWPORT_ANDROID_H_
 
 #include "base/android/jni_weak_ref.h"
 #include "base/android/scoped_java_ref.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 11 matching lines @@
 struct ANativeWindow;
 
 namespace mojo {
 namespace services {
 
 class MOJO_NATIVE_VIEWPORT_EXPORT NativeViewportAndroid
     : public NativeViewport {
  public:
   static MOJO_NATIVE_VIEWPORT_EXPORT bool Register(JNIEnv* env);
 
-  explicit NativeViewportAndroid(shell::Context* context,
+  explicit NativeViewportAndroid(NativeViewportContext* context,
                                  NativeViewportDelegate* delegate);
   virtual ~NativeViewportAndroid();
 
   void Destroy(JNIEnv* env, jobject obj);
   void SurfaceCreated(JNIEnv* env, jobject obj, jobject jsurface);
   void SurfaceDestroyed(JNIEnv* env, jobject obj);
   void SurfaceSetSize(JNIEnv* env, jobject obj, jint width, jint height);
   bool TouchEvent(JNIEnv* env, jobject obj, jint pointer_id, jint action,
                   jfloat x, jfloat y, jlong time_ms);
 
  private:
   // Overridden from NativeViewport:
   virtual void Init(const gfx::Rect& bounds) OVERRIDE;
   virtual void Show() OVERRIDE;
   virtual void Hide() OVERRIDE;
   virtual void Close() OVERRIDE;
   virtual gfx::Size GetSize() OVERRIDE;
   virtual void SetBounds(const gfx::Rect& bounds) OVERRIDE;
   virtual void SetCapture() OVERRIDE;
   virtual void ReleaseCapture() OVERRIDE;
 
   void ReleaseWindow();
 
   NativeViewportDelegate* delegate_;
-  shell::Context* context_;
+  NativeViewportContext* context_;
   ANativeWindow* window_;
   gfx::Rect bounds_;
   ui::SequentialIDGenerator id_generator_;
 
   base::WeakPtrFactory<NativeViewportAndroid> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeViewportAndroid);
 };
 
 
 }  // namespace services
 }  // namespace mojo
 
 #endif  // MOJO_SERVICES_NATIVE_VIEWPORT_NATIVE_VIEWPORT_ANDROID_H_