Use proper namespace in skia/ext

chrome/browser/ui/cocoa/autofill/new_credit_card_bubble_cocoa.mm

 // Copyright 2013 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/cocoa/autofill/new_credit_card_bubble_cocoa.h"
 
 #include "base/i18n/rtl.h"
 #include "base/mac/foundation_util.h"
 #include "base/strings/sys_string_conversions.h"
 #include "chrome/browser/ui/autofill/new_credit_card_bubble_controller.h"
@@ skipping 70 matching lines @@
                         defer:NO]);
   bridge_.reset(bridge);
   if ((self = [super initWithWindow:window
                        parentWindow:parentWindow
                          anchoredAt:NSZeroPoint])) {
     controller_ = controller;
     [window setInfoBubbleCanBecomeKeyWindow:NO];
 
     ui::NativeTheme* nativeTheme = ui::NativeThemeMac::instance();
     [[self bubble] setBackgroundColor:
-        gfx::SkColorToCalibratedNSColor(nativeTheme->GetSystemColor(
+        skia::SkColorToCalibratedNSColor(nativeTheme->GetSystemColor(
             ui::NativeTheme::kColorId_DialogBackground))];
     [self performLayout];
   }
   return self;
 }
 
 - (void)showAtAnchor:(NSPoint)anchorPoint {
   [self setAnchorPoint:anchorPoint];
   [[self bubble] setNeedsDisplay:YES];
   [self showWindow:nil];
@@ skipping 164 matching lines @@
                 controller:controller_
                     bridge:this];
 }
 
 InfoBubbleWindow* NewCreditCardBubbleCocoa::GetInfoBubbleWindow() {
   return base::mac::ObjCCastStrict<InfoBubbleWindow>(
       [bubbleController_ window]);
 }
 
 }  // namespace autofill