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

chrome/browser/ui/cocoa/browser/avatar_menu_bubble_controller_unittest.mm

Index: chrome/browser/ui/cocoa/browser/avatar_menu_bubble_controller_unittest.mm
diff --git a/chrome/browser/ui/cocoa/browser/avatar_menu_bubble_controller_unittest.mm b/chrome/browser/ui/cocoa/browser/avatar_menu_bubble_controller_unittest.mm
index 7f4a8b43befedf8b9f20f23ec513d1b90c5a7588..705d148aeece3c363550fd09698bf9a388189d9c 100644
--- a/chrome/browser/ui/cocoa/browser/avatar_menu_bubble_controller_unittest.mm
+++ b/chrome/browser/ui/cocoa/browser/avatar_menu_bubble_controller_unittest.mm
@@ -30,10 +30,12 @@ class AvatarMenuBubbleControllerTest : public CocoaTest {
     ASSERT_TRUE(manager_.SetUp());
 
     manager_.CreateTestingProfile("test1", scoped_ptr<PrefServiceSyncable>(),
-                                  ASCIIToUTF16("Test 1"), 1, std::string(),
+                                  base::ASCIIToUTF16("Test 1"), 1,
+                                  std::string(),
                                   TestingProfile::TestingFactories());
     manager_.CreateTestingProfile("test2", scoped_ptr<PrefServiceSyncable>(),
-                                  ASCIIToUTF16("Test 2"), 0, std::string(),
+                                  base::ASCIIToUTF16("Test 2"), 0,
+                                  std::string(),
                                   TestingProfile::TestingFactories());
 
     menu_ = new AvatarMenu(manager_.profile_info_cache(), NULL, NULL);
@@ -124,7 +126,8 @@ TEST_F(AvatarMenuBubbleControllerTest, PerformLayout) {
 
   // Now create a new profile and notify the delegate.
   manager()->CreateTestingProfile("test3", scoped_ptr<PrefServiceSyncable>(),
-                                  ASCIIToUTF16("Test 3"), 0, std::string(),
+                                  base::ASCIIToUTF16("Test 3"), 0,
+                                  std::string(),
                                   TestingProfile::TestingFactories());
 
   // Testing the bridge is not worth the effort...