Extract minimal RenderViewHost interface for embedders, leaving

chrome/browser/ui/views/extensions/shell_window_views.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/views/extensions/shell_window_views.h"
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/extensions/extension_host.h"
 #include "chrome/common/extensions/extension.h"
 #include "ui/base/hit_test.h"
@@ skipping 190 matching lines @@
   }
   SetWindowRgn(host_->view()->native_view(), path.CreateNativeRegion(), 1);
 
   SkRegion* rgn = new SkRegion;
   rgn->op(0, 0, width, 20, SkRegion::kUnion_Op);
   if (!GetWidget()->IsMaximized()) {
     rgn->op(0, 0, kResizeBorderWidth, height, SkRegion::kUnion_Op);
     rgn->op(width - kResizeBorderWidth, 0, width, height, SkRegion::kUnion_Op);
     rgn->op(0, height - kResizeBorderWidth, width, height, SkRegion::kUnion_Op);
   }
-  host_->render_view_host()->view()->SetClickthroughRegion(rgn);
+  host_->render_view_host()->GetView()->SetClickthroughRegion(rgn);
 #endif
 }
 
 // static
 ShellWindow* ShellWindow::CreateShellWindow(ExtensionHost* host) {
   return new ShellWindowViews(host);
 }