Move more web widgets painting from webkit to chrome.

chrome/browser/chromeos/native_theme_chromeos.cc

 // Copyright (c) 2010 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/chromeos/native_theme_chromeos.h"
 
 #include <limits>
 
 #include "app/resource_bundle.h"
 #include "base/logging.h"
@@ skipping 106 matching lines @@
     case kScrollbarVerticalTrack:
       width = scrollbar_width;
       height = 0;
       break;
     case kScrollbarHorizontalThumb:
     case kScrollbarVerticalThumb:
       // allow thumb to be square but no shorter.
       width = scrollbar_width;
       height = scrollbar_width;
       break;
+    default:
+      return NativeThemeLinux::GetSize(part);
   }
   return gfx::Size(width, height);
 }
 
 void NativeThemeChromeos::PaintTrack(skia::PlatformCanvas* canvas,
     Part part, State state,
     const ScrollbarTrackExtraParams& extra_params, const gfx::Rect& rect) {
   ResourceBundle& rb = ResourceBundle::GetSharedInstance();
   if (part == kScrollbarVerticalTrack) {
     SkBitmap* background =
@@ skipping 112 matching lines @@
     SkBitmap transposed_bitmap =
         SkBitmapOperations::CreateTransposedBtmap(*vertical_bitmap);
     SkBitmap* horizontal_bitmap = new SkBitmap(transposed_bitmap);
 
     horizontal_bitmaps_[resource_id] = horizontal_bitmap;
     return horizontal_bitmap;
   }
   return NULL;
 }