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

chrome/browser/apps/web_view_interactive_browsertest.cc

 // Copyright 2013 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 "apps/shell_window.h"
 #include "apps/shell_window_registry.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/apps/app_browsertest_util.h"
 #include "chrome/browser/extensions/extension_test_message_listener.h"
@@ skipping 279 matching lines @@
       return last_render_widget_host_;
     }
 
    private:
     scoped_refptr<content::MessageLoopRunner> message_loop_;
     bool created_;
     content::RenderWidgetHost* last_render_widget_host_;
   };
 
   void WaitForTitle(const char* title) {
-    base::string16 expected_title(ASCIIToUTF16(title));
-    base::string16 error_title(ASCIIToUTF16("FAILED"));
+    base::string16 expected_title(base::ASCIIToUTF16(title));
+    base::string16 error_title(base::ASCIIToUTF16("FAILED"));
     content::TitleWatcher title_watcher(guest_web_contents(), expected_title);
     title_watcher.AlsoWaitForTitle(error_title);
     ASSERT_EQ(expected_title, title_watcher.WaitAndGetTitle());
   }
 
   void PopupTestHelper(const gfx::Point& padding) {
     PopupCreatedObserver popup_created_observer;
     popup_created_observer.Reset();
 
     content::SimulateKeyPress(
         guest_web_contents(),
         ui::VKEY_C,  // C to autocomplete.
         false, false, false, false);
 
     WaitForTitle("PASSED1");
 
     popup_created_observer.Start();
 
     content::RenderWidgetHost* popup_rwh = NULL;
     popup_rwh = popup_created_observer.last_render_widget_host();
     // Popup must be present.
     ASSERT_TRUE(popup_rwh);
     ASSERT_TRUE(!popup_rwh->IsRenderView());
     ASSERT_TRUE(popup_rwh->GetView());
 
-    base::string16 expected_title = ASCIIToUTF16("PASSED2");
-    base::string16 error_title = ASCIIToUTF16("FAILED");
+    base::string16 expected_title = base::ASCIIToUTF16("PASSED2");
+    base::string16 error_title = base::ASCIIToUTF16("FAILED");
     content::TitleWatcher title_watcher(guest_web_contents(), expected_title);
     title_watcher.AlsoWaitForTitle(error_title);
     EXPECT_TRUE(content::ExecuteScript(guest_web_contents(),
                                        "changeTitle();"));
     ASSERT_EQ(expected_title, title_watcher.WaitAndGetTitle());
 
     gfx::Rect popup_bounds = popup_rwh->GetView()->GetViewBounds();
     // (2, 2) is expected to lie on the first datalist element.
     SimulateRWHMouseClick(popup_rwh, 2, 2);
 
@@ skipping 424 matching lines @@
 
   ASSERT_TRUE(done_listener.WaitUntilSatisfied());
 }
 
 IN_PROC_BROWSER_TEST_F(WebViewInteractiveTest,
                        PointerLock_PointerLockLostWithFocus) {
   TestHelper("testPointerLockLostWithFocus",
              "web_view/pointerlock",
              NO_TEST_SERVER);
 }