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

content/browser/media/webrtc_aecdump_browsertest.cc

 // Copyright (c) 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 "base/command_line.h"
 #include "base/file_util.h"
 #include "base/platform_file.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/test/browser_test_utils.h"
@@ skipping 35 matching lines @@
     command_line->AppendSwitchPath(switches::kEnableWebRtcAecRecordings,
                                    dump_file_);
   }
 
  protected:
   bool ExecuteJavascript(const std::string& javascript) {
     return ExecuteScript(shell()->web_contents(), javascript);
   }
 
   void ExpectTitle(const std::string& expected_title) const {
-    base::string16 expected_title16(ASCIIToUTF16(expected_title));
+    base::string16 expected_title16(base::ASCIIToUTF16(expected_title));
     TitleWatcher title_watcher(shell()->web_contents(), expected_title16);
     EXPECT_EQ(expected_title16, title_watcher.WaitAndGetTitle());
   }
 
   base::ScopedTempDir temp_dir_;
   base::FilePath dump_file_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(WebrtcAecDumpBrowserTest);
 };
@@ skipping 17 matching lines @@
   EXPECT_TRUE(ExecuteJavascript("call({video: true, audio: true});"));
   ExpectTitle("OK");
 
   EXPECT_TRUE(base::PathExists(dump_file_));
   int64 file_size = 0;
   EXPECT_TRUE(base::GetFileSize(dump_file_, &file_size));
   EXPECT_GT(file_size, 0);
 }
 
 }  // namespace content