Update uses of UTF conversions in content/ to use the base:: namespace.

content/common/mac/attributed_string_coder_unittest.mm

 // Copyright (c) 2011 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 <AppKit/AppKit.h>
 
 #include "base/mac/scoped_nsobject.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/utf_string_conversions.h"
 #import "content/common/mac/attributed_string_coder.h"
@@ skipping 88 matching lines @@
   EXPECT_NSEQ(expected.get(), decoded);
 }
 
 TEST_F(AttributedStringCoderTest, NilString) {
   NSAttributedString* decoded = EncodeAndDecode(nil);
   EXPECT_TRUE(decoded);
   EXPECT_EQ(0U, [decoded length]);
 }
 
 TEST_F(AttributedStringCoderTest, OutOfRange) {
-  AttributedStringCoder::EncodedString encoded(ASCIIToUTF16("Hello World"));
+  AttributedStringCoder::EncodedString encoded(
+      base::ASCIIToUTF16("Hello World"));
   encoded.attributes()->push_back(
       AttributedStringCoder::FontAttribute(
           FontDescriptor([NSFont systemFontOfSize:12]),
           gfx::Range(0, 5)));
   encoded.attributes()->push_back(
       AttributedStringCoder::FontAttribute(
           FontDescriptor([NSFont systemFontOfSize:14]),
           gfx::Range(5, 100)));
   encoded.attributes()->push_back(
       AttributedStringCoder::FontAttribute(
           FontDescriptor([NSFont systemFontOfSize:16]),
           gfx::Range(100, 5)));
 
   NSAttributedString* decoded = AttributedStringCoder::Decode(&encoded);
   EXPECT_TRUE(decoded);
 
   NSRange range;
   NSDictionary* attrs = [decoded attributesAtIndex:0 effectiveRange:&range];
   EXPECT_NSEQ([NSFont systemFontOfSize:12],
               [attrs objectForKey:NSFontAttributeName]);
   EXPECT_TRUE(NSEqualRanges(range, NSMakeRange(0, 5)));
 
   attrs = [decoded attributesAtIndex:5 effectiveRange:&range];
   EXPECT_FALSE([attrs objectForKey:NSFontAttributeName]);
   EXPECT_EQ(0U, [attrs count]);
 }