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

chrome/browser/ui/cocoa/task_manager_mac_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 "base/compiler_specific.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/task_manager/resource_provider.h"
 #import "chrome/browser/ui/cocoa/cocoa_test_helper.h"
@@ skipping 41 matching lines @@
   TaskManagerMac* bridge(new TaskManagerMac(&task_manager));
   TaskManagerWindowController* controller = bridge->cocoa_controller();
 
   // Releases the controller, which in turn deletes |bridge|.
   [controller close];
 }
 
 TEST_F(TaskManagerWindowControllerTest, Sort) {
   TaskManager task_manager;
 
-  TestResource resource1(UTF8ToUTF16("zzz"), 1);
-  TestResource resource2(UTF8ToUTF16("zzb"), 2);
-  TestResource resource3(UTF8ToUTF16("zza"), 2);
+  TestResource resource1(base::UTF8ToUTF16("zzz"), 1);
+  TestResource resource2(base::UTF8ToUTF16("zzb"), 2);
+  TestResource resource3(base::UTF8ToUTF16("zza"), 2);
 
   task_manager.AddResource(&resource1);
   task_manager.AddResource(&resource2);
   task_manager.AddResource(&resource3);  // Will be in the same group as 2.
 
   TaskManagerMac* bridge(new TaskManagerMac(&task_manager));
   TaskManagerWindowController* controller = bridge->cocoa_controller();
   NSTableView* table = [controller tableView];
   ASSERT_EQ(3, [controller numberOfRowsInTableView:table]);
 
@@ skipping 12 matching lines @@
   [controller close];
 
   task_manager.RemoveResource(&resource1);
   task_manager.RemoveResource(&resource2);
   task_manager.RemoveResource(&resource3);
 }
 
 TEST_F(TaskManagerWindowControllerTest, SelectionAdaptsToSorting) {
   TaskManager task_manager;
 
-  TestResource resource1(UTF8ToUTF16("yyy"), 1);
-  TestResource resource2(UTF8ToUTF16("aaa"), 2);
+  TestResource resource1(base::UTF8ToUTF16("yyy"), 1);
+  TestResource resource2(base::UTF8ToUTF16("aaa"), 2);
 
   task_manager.AddResource(&resource1);
   task_manager.AddResource(&resource2);
 
   TaskManagerMac* bridge(new TaskManagerMac(&task_manager));
   TaskManagerWindowController* controller = bridge->cocoa_controller();
   NSTableView* table = [controller tableView];
   ASSERT_EQ(2, [controller numberOfRowsInTableView:table]);
 
   // Select row 0 in the table (corresponds to row 1 in the model).
   [table selectRowIndexes:[NSIndexSet indexSetWithIndex:0]
      byExtendingSelection:NO];
 
   // Change the name of resource2 so that it becomes row 1 in the table.
-  resource2.title_ = UTF8ToUTF16("zzz");
+  resource2.title_ = base::UTF8ToUTF16("zzz");
   bridge->task_manager()->model()->Refresh();
   bridge->OnItemsChanged(1, 1);
 
   // Check that the selection has moved to row 1.
   NSIndexSet* selection = [table selectedRowIndexes];
   ASSERT_EQ(1u, [selection count]);
   EXPECT_EQ(1u, [selection firstIndex]);
 
   // Releases the controller, which in turn deletes |bridge|.
   [controller close];
 
   task_manager.RemoveResource(&resource1);
   task_manager.RemoveResource(&resource2);
 }