Remove final RenderWidgetHostImpl dependency from OverscrollController

content/browser/web_contents/web_contents_view_aura.cc

 // 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.
 
 #include "content/browser/web_contents/web_contents_view_aura.h"
 
 #include "base/auto_reset.h"
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 1339 matching lines @@
   if (web_contents_->GetDelegate() &&
       !web_contents_->GetDelegate()->TakeFocus(web_contents_, reverse) &&
       delegate_.get()) {
     delegate_->TakeFocus(reverse);
   }
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // WebContentsViewAura, OverscrollControllerDelegate implementation:
 
+gfx::Rect WebContentsViewAura::GetVisibleBounds() const {
+  RenderWidgetHostView* rwhv = web_contents_->GetRenderWidgetHostView();
+  if (!rwhv || !rwhv->IsShowing())
+    return gfx::Rect();
+
+  return rwhv->GetViewBounds();
+}
+
 void WebContentsViewAura::OnOverscrollUpdate(float delta_x, float delta_y) {
   if (current_overscroll_gesture_ == OVERSCROLL_NONE)
     return;
 
   aura::Window* target = GetWindowToAnimateForOverscroll();
   ui::ScopedLayerAnimationSettings settings(target->layer()->GetAnimator());
   settings.SetPreemptionStrategy(ui::LayerAnimator::IMMEDIATELY_SET_NEW_TARGET);
   gfx::Vector2d translate = GetTranslationForOverscroll(delta_x, delta_y);
   gfx::Transform transform;
 
@@ skipping 265 matching lines @@
       event.location(),
       gfx::Screen::GetScreenFor(GetNativeView())->GetCursorScreenPoint(),
       ConvertAuraEventFlagsToWebInputEventModifiers(event.flags()));
   if (drag_dest_delegate_)
     drag_dest_delegate_->OnDrop();
   current_drop_data_.reset();
   return current_drag_op_;
 }
 
 }  // namespace content