app_list: Fix shadow bleeds over launcher button and steals mouse events

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/utf_string_conversions.h"
 #include "content/browser/renderer_host/dip_util.h"
 #include "content/browser/renderer_host/render_view_host_factory.h"
 #include "content/browser/web_contents/interstitial_page_impl.h"
@@ skipping 305 matching lines @@
 
 void WebContentsViewAura::SizeContents(const gfx::Size& size) {
   gfx::Rect bounds = window_->bounds();
   if (bounds.size() != size) {
     bounds.set_size(size);
     window_->SetBounds(bounds);
   } else {
     // Our size matches what we want but the renderers size may not match.
     // Pretend we were resized so that the renderers size is updated too.
     SizeChangedCommon(size);
-
   }
 }
 
 void WebContentsViewAura::RenderViewCreated(content::RenderViewHost* host) {
 }
 
 void WebContentsViewAura::Focus() {
   if (web_contents_->GetInterstitialPage()) {
     web_contents_->GetInterstitialPage()->Focus();
     return;
@@ skipping 214 matching lines @@
 
 void WebContentsViewAura::OnWindowDestroyed() {
 }
 
 void WebContentsViewAura::OnWindowVisibilityChanged(bool visible) {
   if (visible)
     web_contents_->ShowContents();
   else
     web_contents_->HideContents();
 }
+
+bool WebContentsViewAura::HasHitTestMask() const {
+  return false;
+}
+
+void WebContentsViewAura::GetHitTestMask(gfx::Path* mask) const {
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // WebContentsViewAura, aura::client::DragDropDelegate implementation:
 
 void WebContentsViewAura::OnDragEntered(const aura::DropTargetEvent& event) {
   if (drag_dest_delegate_)
     drag_dest_delegate_->DragInitialize(web_contents_);
 
   WebDropData drop_data;
   PrepareWebDropData(&drop_data, event.data());
   WebKit::WebDragOperationsMask op = ConvertToWeb(event.source_operations());
@@ skipping 45 matching lines @@
     OnDragEntered(event);
 
   web_contents_->GetRenderViewHost()->DragTargetDrop(
       event.location(),
       GetNativeView()->GetRootWindow()->last_mouse_location(),
       ConvertAuraEventFlagsToWebInputEventModifiers(event.flags()));
   if (drag_dest_delegate_)
     drag_dest_delegate_->OnDrop();
   return current_drag_op_;
 }