Add a way to fetch window frame metrics from NativeShellWindow

chrome/browser/ui/extensions/shell_window.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 "chrome/browser/ui/extensions/shell_window.h"
 
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/extensions/extension_process_manager.h"
 #include "chrome/browser/extensions/extension_system.h"
@@ skipping 333 matching lines @@
 
   content::RenderViewHost* rvh = web_contents_->GetRenderViewHost();
   rvh->Send(new ExtensionMsg_MessageInvoke(rvh->GetRoutingID(),
                                            extension_->id(),
                                            "updateAppWindowProperties",
                                            args,
                                            GURL(),
                                            false));
 }
 
+NativeAppWindow* ShellWindow::GetBaseWindow() {
+  return native_app_window_.get();
+}
 
-BaseWindow* ShellWindow::GetBaseWindow() {
-  return native_app_window_.get();
+gfx::NativeWindow ShellWindow::GetNativeWindow() {
+  return GetBaseWindow()->GetNativeWindow();
 }
 
 string16 ShellWindow::GetTitle() const {
   // WebContents::GetTitle() will return the page's URL if there's no <title>
   // specified. However, we'd prefer to show the name of the extension in that
   // case, so we directly inspect the NavigationEntry's title.
   if (!web_contents() ||
       !web_contents()->GetController().GetActiveEntry() ||
       web_contents()->GetController().GetActiveEntry()->GetTitle().empty())
     return UTF8ToUTF16(extension()->name());
@@ skipping 184 matching lines @@
     const extensions::DraggableRegion& region = *iter;
     sk_region->op(
         region.bounds.x(),
         region.bounds.y(),
         region.bounds.right(),
         region.bounds.bottom(),
         region.draggable ? SkRegion::kUnion_Op : SkRegion::kDifference_Op);
   }
   return sk_region;
 }