Make Paste Popup use selection rect for positioning

content/browser/android/selection_popup_controller.h

 // Copyright 2017 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_SELECTION_POPUP_CONTROLLER_H_
 #define CONTENT_BROWSER_ANDROID_SELECTION_POPUP_CONTROLLER_H_
 
 #include <jni.h>
 
 #include "base/android/jni_weak_ref.h"
@@ skipping 11 matching lines @@
                            const base::android::JavaParamRef<jobject>& obj,
                            WebContents* web_contents);
 
   // RendetWidgetHostConnector implementation.
   void UpdateRenderProcessConnection(
       RenderWidgetHostViewAndroid* old_rwhva,
       RenderWidgetHostViewAndroid* new_rhwva) override;
 
   // Called from native -> java
   void OnSelectionEvent(ui::SelectionEventType event,
-                        const gfx::PointF& selection_anchor,
                         const gfx::RectF& selection_rect);
   void OnSelectionChanged(const std::string& text);
 
  private:
   ~SelectionPopupController() override {}
   JavaObjectWeakGlobalRef java_obj_;
 };
 
 bool RegisterSelectionPopupController(JNIEnv* env);
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ANDROID_SELECTION_POPUP_CONTROLLER_H_