ui: Move android C++ source files into base/android directory.

ui/android/view_android.h

-// Copyright (c) 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 UI_ANDROID_VIEW_ANDROID_H_
-#define UI_ANDROID_VIEW_ANDROID_H_
-
-#include <jni.h>
-#include "base/android/jni_helper.h"
-#include "base/android/scoped_java_ref.h"
-#include "ui/base/ui_export.h"
-
-namespace ui {
-
-class WindowAndroid;
-
-// This class is the native counterpart for ViewAndroid. It is owned by the
-// Java ViewAndroid object.
-class UI_EXPORT ViewAndroid {
- public:
-  ViewAndroid(JNIEnv* env, jobject obj, WindowAndroid* window);
-
-  void Destroy(JNIEnv* env, jobject obj);
-
-  WindowAndroid* GetWindowAndroid();
-
-  base::android::ScopedJavaLocalRef<jobject> GetJavaObject();
-
-  static bool RegisterViewAndroid(JNIEnv* env);
-
- private:
-  ~ViewAndroid();
-  JavaObjectWeakGlobalRef weak_java_view_;
-  WindowAndroid* window_android_;
-
-  DISALLOW_COPY_AND_ASSIGN(ViewAndroid);
-};
-
-}  // namespace ui
-
-#endif  // UI_ANDROID_VIEW_ANDROID_H_