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

chrome/browser/ui/cocoa/history_menu_bridge_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.
 
 #import <Cocoa/Cocoa.h>
 #include <vector>
 
 #include "base/memory/ref_counted_memory.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string_util.h"
@@ skipping 157 matching lines @@
 
   EXPECT_EQ(1, [menu numberOfItems]);
   EXPECT_NSEQ(@"HEADER",
       [[menu itemWithTag:HistoryMenuBridge::kVisited] title]);
 }
 
 // Test that AddItemToMenu() properly adds HistoryItem objects as menus.
 TEST_F(HistoryMenuBridgeTest, AddItemToMenu) {
   NSMenu* menu = [[[NSMenu alloc] initWithTitle:@"history foo"] autorelease];
 
-  const base::string16 short_url = ASCIIToUTF16("http://foo/");
-  const base::string16 long_url = ASCIIToUTF16("http://super-duper-long-url--."
+  const base::string16 short_url = base::ASCIIToUTF16("http://foo/");
+  const base::string16 long_url = base::ASCIIToUTF16(
+      "http://super-duper-long-url--."
       "that.cannot.possibly.fit.even-in-80-columns"
       "or.be.reasonably-displayed-in-a-menu"
       "without.looking-ridiculous.com/"); // 140 chars total
 
   // HistoryItems are owned by the HistoryMenuBridge when AddItemToBridgeMenu()
   // is called, which places them into the |menu_item_map_|, which owns them.
   HistoryMenuBridge::HistoryItem* item1 = CreateItem(short_url);
   AddItemToBridgeMenu(item1, menu, 100, 0);
 
   HistoryMenuBridge::HistoryItem* item2 = CreateItem(long_url);
@@ skipping 132 matching lines @@
   EXPECT_TRUE([[submenu2 itemAtIndex:1] isSeparatorItem]);
   EXPECT_NSEQ(@"magic", [[submenu2 itemAtIndex:2] title]);
   EXPECT_NSEQ(@"goats", [[submenu2 itemAtIndex:3] title]);
   EXPECT_NSEQ(@"teleporter", [[submenu2 itemAtIndex:4] title]);
 }
 
 // Tests that we properly request an icon from the FaviconService.
 TEST_F(HistoryMenuBridgeTest, GetFaviconForHistoryItem) {
   // Create a fake item.
   HistoryMenuBridge::HistoryItem item;
-  item.title = ASCIIToUTF16("Title");
+  item.title = base::ASCIIToUTF16("Title");
   item.url = GURL("http://google.com");
 
   // Request the icon.
   GetFaviconForHistoryItem(&item);
 
   // Make sure the item was modified properly.
   EXPECT_TRUE(item.icon_requested);
   EXPECT_NE(CancelableTaskTracker::kBadTaskId, item.icon_task_id);
 }
 
@@ skipping 14 matching lines @@
   image_result.image = gfx::Image::CreateFrom1xBitmap(bitmap);
   GotFaviconData(&item, image_result);
 
   // Make sure the callback works.
   EXPECT_FALSE(item.icon_requested);
   EXPECT_TRUE(item.icon.get());
   EXPECT_TRUE([item.menu_item image]);
 }
 
 }  // namespace