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

ui/android/window_android.h

-// Copyright (c) 2012 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_WINDOW_ANDROID_H_
-#define UI_ANDROID_WINDOW_ANDROID_H_
-
-#include <jni.h>
-#include <vector>
-#include "base/android/jni_helper.h"
-#include "base/android/scoped_java_ref.h"
-#include "ui/base/ui_export.h"
-#include "ui/gfx/vector2d_f.h"
-
-namespace ui {
-
-// Android implementation of the activity window.
-class UI_EXPORT WindowAndroid {
- public:
-  WindowAndroid(JNIEnv* env, jobject obj);
-
-  void Destroy(JNIEnv* env, jobject obj);
-
-  base::android::ScopedJavaLocalRef<jobject> GetJavaObject();
-
-  static bool RegisterWindowAndroid(JNIEnv* env);
-
-  // The content offset is used to translate snapshots to the correct part of
-  // the window.
-  void set_content_offset(const gfx::Vector2dF& content_offset) {
-    content_offset_ = content_offset;
-  }
-
-  bool GrabSnapshot(int content_x, int content_y, int width, int height,
-                    std::vector<unsigned char>* png_representation);
-
- private:
-  ~WindowAndroid();
-
-  JavaObjectWeakGlobalRef weak_java_window_;
-  gfx::Vector2dF content_offset_;
-
-  DISALLOW_COPY_AND_ASSIGN(WindowAndroid);
-};
-
-}  // namespace ui
-
-#endif  // UI_ANDROID_WINDOW_ANDROID_H_