android_webview: Let AwContents manage TouchHandleDrawable

content/browser/android/popup_touch_handle_drawable.h

-// Copyright 2014 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 CONTENT_BROWSER_ANDROID_POPUP_TOUCH_HANDLE_DRAWABLE_H_
-#define CONTENT_BROWSER_ANDROID_POPUP_TOUCH_HANDLE_DRAWABLE_H_
-
-#include "ui/touch_selection/touch_handle.h"
-
-#include <memory>
-
-#include "base/android/jni_android.h"
-#include "base/android/jni_weak_ref.h"
-#include "base/macros.h"
-
-namespace content {
-
-class ContentViewCore;
-
-// Touch handle drawable backed by an Android PopupWindow.
-class PopupTouchHandleDrawable : public ui::TouchHandleDrawable {
- public:
-  static std::unique_ptr<PopupTouchHandleDrawable> Create(
-      ContentViewCore* content_view_core,
-      float dpi_scale);
-  ~PopupTouchHandleDrawable() override;
-
-  // ui::TouchHandleDrawable implementation.
-  void SetEnabled(bool enabled) override;
-  void SetOrientation(ui::TouchHandleOrientation orientation,
-                      bool mirror_vertical,
-                      bool mirror_horizontal) override;
-  void SetOrigin(const gfx::PointF& origin) override;
-  void SetAlpha(float alpha) override;
-  gfx::RectF GetVisibleBounds() const override;
-  float GetDrawableHorizontalPaddingRatio() const override;
-
- private:
-  PopupTouchHandleDrawable(JNIEnv* env, jobject obj, float dpi_scale);
-
-  JavaObjectWeakGlobalRef java_ref_;
-
-  const float dpi_scale_;
-  float drawable_horizontal_padding_ratio_;
-
-  DISALLOW_COPY_AND_ASSIGN(PopupTouchHandleDrawable);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_ANDROID_POPUP_TOUCH_HANDLE_DRAWABLE_H_