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

chrome/browser/autocomplete/extension_app_provider_unittest.cc

 // 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/basictypes.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/autocomplete/autocomplete_match.h"
 #include "chrome/browser/autocomplete/extension_app_provider.h"
 #include "chrome/browser/history/history_service.h"
 #include "chrome/browser/history/history_service_factory.h"
 #include "chrome/browser/history/url_database.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/test/test_browser_thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+using base::ASCIIToUTF16;
+
 class ExtensionAppProviderTest : public testing::Test {
  protected:
   struct test_data {
     const base::string16 input;
     const size_t num_results;
     const GURL output[3];
   };
 
   ExtensionAppProviderTest()
       : ui_thread_(content::BrowserThread::UI, &message_loop_),
@@ skipping 41 matching lines @@
     // Populate the Extension Apps list.
     ExtensionAppProvider::ExtensionApp extension_app = {
       ASCIIToUTF16(kExtensionApps[i].app_name),
       ASCIIToUTF16(kExtensionApps[i].launch_url),
       kExtensionApps[i].should_match_against_launch_url
     };
     app_provider_->AddExtensionAppForTesting(extension_app);
 
     // Populate the InMemoryDatabase.
     history::URLRow info(GURL(kExtensionApps[i].launch_url));
-    info.set_title(UTF8ToUTF16(kExtensionApps[i].title));
+    info.set_title(base::UTF8ToUTF16(kExtensionApps[i].title));
     info.set_typed_count(kExtensionApps[i].typed_count);
     url_db->AddURL(info);
   }
 }
 
 void ExtensionAppProviderTest::RunTest(
     test_data* keyword_cases,
     int num_cases) {
   ACMatches matches;
   for (int i = 0; i < num_cases; ++i) {
@@ skipping 57 matching lines @@
     ExtensionAppProvider::ExtensionApp extension_app =
         {ASCIIToUTF16(cases[i].name), url, true};
     AutocompleteMatch match =
         app_provider_->CreateAutocompleteMatch(input,
                                                extension_app,
                                                0,
                                                base::string16::npos);
     EXPECT_EQ(ASCIIToUTF16(cases[i].match_contents), match.contents);
   }
 }