android_webview: Let AwContents manage TouchHandleDrawable

content/public/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>
@@ skipping 17 matching lines @@
   // 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;
 
+  const base::android::ScopedJavaLocalRef<jobject>

[Jinsuk Kim, 2016/08/23 06:41:33]

I guess I should return JavaObjectWeakGlobalRef, right?

[boliu, 2016/08/23 15:03:26]

Yeah

+  GetJavaObj(JNIEnv* env) const {
+    return java_ref_.get(env);
+  }
+
  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_