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

chrome/browser/ui/cocoa/bookmarks/bookmark_bar_view_unittest.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 "base/mac/scoped_nsobject.h"
 #include "base/strings/string16.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/bookmarks/bookmark_model.h"
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "chrome/browser/bookmarks/bookmark_test_helpers.h"
@@ skipping 202 matching lines @@
   base::scoped_nsobject<FakeBookmarkDraggingInfo> info(
       [[FakeBookmarkDraggingInfo alloc] init]);
   [view_ setController:info.get()];
   [info reset];
 
   BookmarkModel* bookmark_model =
       BookmarkModelFactory::GetForProfile(profile());
   const BookmarkNode* node =
       bookmark_model->AddURL(bookmark_model->bookmark_bar_node(),
                              0,
-                             ASCIIToUTF16("Test Bookmark"),
+                             base::ASCIIToUTF16("Test Bookmark"),
                              GURL("http://www.exmaple.com"));
 
   base::scoped_nsobject<BookmarkButtonCell> button_cell(
       [[BookmarkButtonCell buttonCellForNode:node
                                         text:nil
                                        image:nil
                               menuController:nil] retain]);
   base::scoped_nsobject<BookmarkButton> dragged_button(
       [[BookmarkButton alloc] init]);
   [dragged_button setCell:button_cell];
@@ skipping 21 matching lines @@
       testing_profile_manager()->CreateTestingProfile("other");
   other_profile->CreateBookmarkModel(true);
 
   BookmarkModel* bookmark_model =
       BookmarkModelFactory::GetForProfile(profile());
   test::WaitForBookmarkModelToLoad(bookmark_model);
 
   const BookmarkNode* node =
       bookmark_model->AddURL(bookmark_model->bookmark_bar_node(),
                              0,
-                             ASCIIToUTF16("Test Bookmark"),
+                             base::ASCIIToUTF16("Test Bookmark"),
                              GURL("http://www.exmaple.com"));
 
   base::scoped_nsobject<BookmarkButtonCell> button_cell(
       [[BookmarkButtonCell buttonCellForNode:node
                                         text:nil
                                        image:nil
                               menuController:nil] retain]);
   base::scoped_nsobject<BookmarkButton> dragged_button(
       [[BookmarkButton alloc] init]);
   [dragged_button setCell:button_cell];
@@ skipping 42 matching lines @@
   EXPECT_TRUE([info draggingEnteredCalled]);  // Ensure controller pinged.
   EXPECT_TRUE([view_ dropIndicatorShown]);
   EXPECT_EQ([view_ dropIndicatorPosition], kFakeIndicatorPos);
 
   [info setDropIndicatorShown:NO];
   EXPECT_EQ([view_ draggingEntered:(id)info.get()], NSDragOperationMove);
   EXPECT_FALSE([view_ dropIndicatorShown]);
 }
 
 }  // namespace