Add BlimpClientContext and factory with real and dummy implementation

blimp/client/core/blimp_contents_impl.h

 // Copyright 2016 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 BLIMP_CLIENT_CORE_BLIMP_CONTENTS_IMPL_H_
 #define BLIMP_CLIENT_CORE_BLIMP_CONTENTS_IMPL_H_
 
 #include "base/macros.h"
 #include "base/observer_list.h"
-#include "base/supports_user_data.h"
 #include "blimp/client/core/blimp_navigation_controller_delegate.h"
 #include "blimp/client/core/blimp_navigation_controller_impl.h"
 #include "blimp/client/public/blimp_contents.h"
 #include "url/gurl.h"
 
 #if defined(OS_ANDROID)
-#include "base/android/jni_android.h"
+#include "base/android/scoped_java_ref.h"
 #endif  // defined(OS_ANDROID)
 
 namespace blimp {
 namespace client {
 
 #if defined(OS_ANDROID)
 class BlimpContentsImplAndroid;
 #endif  // defined(OS_ANDROID)
 
 class BlimpContentsObserver;
 class BlimpNavigationController;
 
 // BlimpContentsImpl is the implementation of the core class in
 // //blimp/client/core, the BlimpContents.
 class BlimpContentsImpl : public BlimpContents,
-                          public BlimpNavigationControllerDelegate,
-                          base::SupportsUserData {
+                          public BlimpNavigationControllerDelegate {
  public:
   BlimpContentsImpl();
   ~BlimpContentsImpl() override;
 
 #if defined(OS_ANDROID)
   base::android::ScopedJavaLocalRef<jobject> GetJavaBlimpContentsImpl();
   BlimpContentsImplAndroid* GetBlimpContentsImplAndroid();
 #endif  // defined(OS_ANDROID)
 
   // BlimpContents implementation.
@@ skipping 11 matching lines @@
   // A list of all the observers of this BlimpContentsImpl.
   base::ObserverList<BlimpContentsObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(BlimpContentsImpl);
 };
 
 }  // namespace client
 }  // namespace blimp
 
 #endif  // BLIMP_CLIENT_CORE_BLIMP_CONTENTS_IMPL_H_