Use proper namespace in skia/ext

ui/gfx/render_text_mac.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 "ui/gfx/render_text_mac.h"
 
 #include <ApplicationServices/ApplicationServices.h>
 #import <AppKit/AppKit.h>
 #include <CoreText/CoreText.h>
 
@@ skipping 295 matching lines @@
   base::ScopedCFTypeRef<CFMutableArrayRef> attributes(
       CFArrayCreateMutable(NULL, 0, &kCFTypeArrayCallBacks));
 
   // https://developer.apple.com/library/mac/#documentation/Carbon/Reference/CoreText_StringAttributes_Ref/Reference/reference.html
   internal::StyleIterator style(colors(), baselines(), styles());
   const size_t layout_text_length = CFAttributedStringGetLength(attr_string);
   for (size_t i = 0, end = 0; i < layout_text_length; i = end) {
     end = TextIndexToGivenTextIndex(text, style.GetRange().end());
     const CFRange range = CFRangeMake(i, end - i);
     base::ScopedCFTypeRef<CGColorRef> foreground(
-        CGColorCreateFromSkColor(style.color()));
+        skia::CGColorCreateFromSkColor(style.color()));
     CFAttributedStringSetAttribute(attr_string, range,
                                    kCTForegroundColorAttributeName, foreground);
     CFArrayAppendValue(attributes, foreground);
 
     if (style.style(UNDERLINE)) {
       CTUnderlineStyle value = kCTUnderlineStyleSingle;
       base::ScopedCFTypeRef<CFNumberRef> underline_value(
           CFNumberCreate(NULL, kCFNumberSInt32Type, &value));
       CFAttributedStringSetAttribute(
           attr_string, range, kCTUnderlineStyleAttributeName, underline_value);
@@ skipping 83 matching lines @@
     // TODO(asvitkine): Style boundaries are not necessarily per-run. Handle
     //                  this better. Also, support strike and diagonal_strike.
     CFDictionaryRef attributes = CTRunGetAttributes(ct_run);
     CTFontRef ct_font = base::mac::GetValueFromDictionary<CTFontRef>(
         attributes, kCTFontAttributeName);
     run->font = Font(static_cast<NSFont*>(ct_font));
 
     const CGColorRef foreground = base::mac::GetValueFromDictionary<CGColorRef>(
         attributes, kCTForegroundColorAttributeName);
     if (foreground)
-      run->foreground = CGColorRefToSkColor(foreground);
+      run->foreground = skia::CGColorRefToSkColor(foreground);
 
     const CFNumberRef underline =
         base::mac::GetValueFromDictionary<CFNumberRef>(
             attributes, kCTUnderlineStyleAttributeName);
     CTUnderlineStyle value = kCTUnderlineStyleNone;
     if (underline && CFNumberGetValue(underline, kCFNumberSInt32Type, &value))
       run->underline = (value == kCTUnderlineStyleSingle);
 
     run_origin.offset(run_width, 0);
   }
   runs_valid_ = true;
 }
 
 void RenderTextMac::InvalidateStyle() {
   line_.reset();
   attributes_.reset();
   runs_.clear();
   runs_valid_ = false;
 }
 
 }  // namespace gfx