Update some uses of UTF conversions in chrome/browser to use the base:: namespace.

chrome/browser/speech/speech_recognition_bubble_controller_unittest.cc

 // 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 "base/bind.h"
 #include "base/run_loop.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/speech/speech_recognition_bubble_controller.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_tabstrip.h"
@@ skipping 108 matching lines @@
   }
 
   virtual void TearDown() {
     SpeechRecognitionBubble::set_factory(NULL);
     BrowserWithTestWindowTest::TearDown();
   }
 
   static void ActivateBubble() {
     if (MockSpeechRecognitionBubble::type() !=
         MockSpeechRecognitionBubble::BUBBLE_TEST_FOCUS_CHANGED) {
-      test_fixture_->controller_->SetBubbleMessage(ASCIIToUTF16("Test"));
+      test_fixture_->controller_->SetBubbleMessage(base::ASCIIToUTF16("Test"));
     }
   }
 
   static SpeechRecognitionBubble* CreateBubble(
       WebContents* web_contents,
       SpeechRecognitionBubble::Delegate* delegate,
       const gfx::Rect& element_rect) {
     EXPECT_TRUE(BrowserThread::CurrentlyOn(BrowserThread::UI));
     // Set up to activate the bubble soon after it gets created, since we test
     // events sent by the bubble and those are handled only when the bubble is
@@ skipping 66 matching lines @@
 
   controller_->CreateBubble(kBubbleSessionId, 1, 1, gfx::Rect(1, 1));
   base::RunLoop().RunUntilIdle();
   EXPECT_FALSE(cancel_clicked_);
   EXPECT_TRUE(try_again_clicked_);
   EXPECT_FALSE(focus_changed_);
   controller_->CloseBubble();
 }
 
 }  // namespace speech