ui/gfx: Drop unused args from PaintMenuBackgroundColor() and pass gfx::Size instead of gfx::Rect.

ui/gfx/native_theme_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 "ui/gfx/native_theme_aura.h"
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "grit/gfx_resources.h"
 #include "ui/base/resource/resource_bundle.h"
@@ skipping 95 matching lines @@
     case kColorId_TextfieldSelectionBackgroundFocused:
       return kTextfieldSelectionBackgroundFocused;
     case kColorId_TextfieldSelectionBackgroundUnfocused:
       return kTextfieldSelectionBackgroundUnfocused;
 
     default:
       NOTREACHED() << "Invalid color_id: " << color_id;
       break;
   }
 
-  // Return InvalidColor
   return kInvalidColorIdColor;
 }
 
-void NativeThemeAura::PaintMenuPopupBackground(
-    SkCanvas* canvas,
-    State state,
-    const gfx::Rect& rect,
-    const MenuListExtraParams& menu_list) const {
+void NativeThemeAura::PaintMenuPopupBackground(SkCanvas* canvas,
+                                               const gfx::Size& size) const {
   canvas->drawColor(kMenuBackgroundColor, SkXfermode::kSrc_Mode);
 }
 
 void NativeThemeAura::PaintScrollbarTrack(
     SkCanvas* canvas,
     Part part,
     State state,
     const ScrollbarTrackExtraParams& extra_params,
     const gfx::Rect& rect) const {
   ResourceBundle& rb = ResourceBundle::GetSharedInstance();
@@ skipping 115 matching lines @@
         SkBitmapOperations::CreateTransposedBtmap(*vertical_bitmap);
     SkBitmap* horizontal_bitmap = new SkBitmap(transposed_bitmap);
 
     horizontal_bitmaps_[resource_id] = horizontal_bitmap;
     return horizontal_bitmap;
   }
   return NULL;
 }
 
 }  // namespace gfx