Use proper namespace in skia/ext

chrome/browser/ui/cocoa/infobars/infobar_gradient_view.mm

 // 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/cocoa/infobars/infobar_gradient_view.h"
 
 #include "base/mac/scoped_nsobject.h"
 #import "chrome/browser/themes/theme_properties.h"
 #import "chrome/browser/ui/cocoa/browser_window_controller.h"
 #import "chrome/browser/ui/cocoa/infobars/infobar_container_controller.h"
@@ skipping 23 matching lines @@
   if ((self = [super initWithCoder:decoder])) {
     hasTip_ = YES;
   }
   return self;
 }
 
 - (void)setInfobarType:(infobars::InfoBarDelegate::Type)infobarType {
   SkColor topColor = infobars::InfoBar::GetTopColor(infobarType);
   SkColor bottomColor = infobars::InfoBar::GetBottomColor(infobarType);
   base::scoped_nsobject<NSGradient> gradient([[NSGradient alloc]
-      initWithStartingColor:gfx::SkColorToCalibratedNSColor(topColor)
-                endingColor:gfx::SkColorToCalibratedNSColor(bottomColor)]);
+      initWithStartingColor:skia::SkColorToCalibratedNSColor(topColor)
+                endingColor:skia::SkColorToCalibratedNSColor(bottomColor)]);
   [self setGradient:gradient];
 }
 
 - (NSColor*)strokeColor {
   ui::ThemeProvider* themeProvider = [[self window] themeProvider];
   if (!themeProvider)
     return [NSColor blackColor];
 
   BOOL active = [[self window] isMainWindow];
   return themeProvider->GetNSColor(
@@ skipping 81 matching lines @@
 }
 
 - (void)setHasTip:(BOOL)hasTip {
   if (hasTip_ == hasTip)
     return;
   hasTip_ = hasTip;
   [self setNeedsDisplay:YES];
 }
 
 @end