Split //blimp/client/core to relevant parts.

blimp/client/core/android/blimp_contents_observer_proxy.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_ANDROID_BLIMP_CONTENTS_OBSERVER_PROXY_H_
-#define BLIMP_CLIENT_CORE_ANDROID_BLIMP_CONTENTS_OBSERVER_PROXY_H_
-
-#include "base/android/jni_android.h"
-#include "base/android/scoped_java_ref.h"
-#include "base/macros.h"
-#include "blimp/client/core/android/blimp_contents_impl_android.h"
-#include "blimp/client/core/android/blimp_navigation_controller_impl_android.h"
-#include "blimp/client/public/blimp_contents_observer.h"
-
-namespace blimp {
-namespace client {
-
-class BlimpContentsObserverProxy : public BlimpContentsObserver {
- public:
-  static bool RegisterJni(JNIEnv* env);
-
-  BlimpContentsObserverProxy(
-      JNIEnv* env,
-      jobject obj,
-      BlimpContentsImplAndroid* blimp_contents_impl_android);
-  ~BlimpContentsObserverProxy() override;
-
-  void Destroy(JNIEnv* env, const base::android::JavaParamRef<jobject>& obj);
-
-  // BlimpContentsObserver implementation.
-  void OnURLUpdated(const GURL& url) override;
-
- private:
-  base::android::ScopedJavaGlobalRef<jobject> java_obj_;
-
-  BlimpContentsImplAndroid* blimp_contents_impl_android_;
-
-  DISALLOW_COPY_AND_ASSIGN(BlimpContentsObserverProxy);
-};
-
-}  // namespace client
-}  // namespace blimp
-
-#endif  // BLIMP_CLIENT_CORE_ANDROID_BLIMP_CONTENTS_OBSERVER_PROXY_H_