Use proper namespace in skia/ext

chrome/browser/ui/cocoa/screen_capture_notification_ui_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/screen_capture_notification_ui_cocoa.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/compiler_specific.h"
 #include "base/i18n/rtl.h"
@@ skipping 219 matching lines @@
 
 - (void)windowWillClose:(NSNotification*)notification {
   [self stopSharing:nil];
 }
 
 @end
 
 @implementation ScreenCaptureNotificationView
 
 - (void)drawRect:(NSRect)dirtyRect {
-  [gfx::SkColorToSRGBNSColor(ui::NativeThemeMac::instance()->GetSystemColor(
+  [skia::SkColorToSRGBNSColor(ui::NativeThemeMac::instance()->GetSystemColor(
       ui::NativeTheme::kColorId_DialogBackground)) set];
   [[NSBezierPath bezierPathWithRoundedRect:[self bounds]
                                    xRadius:kWindowCornerRadius
                                    yRadius:kWindowCornerRadius] fill];
 }
 
 @end
 
 @implementation WindowGripView
 - (WindowGripView*)init {
   gfx::Image gripImage =
       ui::ResourceBundle::GetSharedInstance().GetNativeImageNamed(
           IDR_SCREEN_CAPTURE_NOTIFICATION_GRIP,
           ui::ResourceBundle::RTL_DISABLED);
   self = [super
       initWithFrame:NSMakeRect(0, 0, gripImage.Width(), gripImage.Height())];
   [self setImage:gripImage.ToNSImage()];
   return self;
 }
 
 - (BOOL)mouseDownCanMoveWindow {
   return YES;
 }
 @end