Use base namespace for string16 in chrome/renderer.

chrome/renderer/autofill/password_generation_agent_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 <string.h>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/test/base/chrome_render_view_test.h"
@@ skipping 196 matching lines @@
   ASSERT_FALSE(element.isNull());
   WebInputElement first_password_element = element.to<WebInputElement>();
   element = document.getElementById(WebString::fromUTF8("second_password"));
   ASSERT_FALSE(element.isNull());
   WebInputElement second_password_element = element.to<WebInputElement>();
 
   // Both password fields should be empty.
   EXPECT_TRUE(first_password_element.value().isNull());
   EXPECT_TRUE(second_password_element.value().isNull());
 
-  string16 password = ASCIIToUTF16("random_password");
+  base::string16 password = ASCIIToUTF16("random_password");
   AutofillMsg_GeneratedPasswordAccepted msg(0, password);
   generation_manager_->OnMessageReceived(msg);
 
   // Password fields are filled out and set as being autofilled.
   EXPECT_EQ(password, first_password_element.value());
   EXPECT_EQ(password, second_password_element.value());
   EXPECT_TRUE(first_password_element.isAutofilled());
   EXPECT_TRUE(second_password_element.isAutofilled());
 
   // Focus moved to the next input field.
@@ skipping 43 matching lines @@
 
   // Receive the account creation forms detected message. Show password
   // generation icon.
   LoadHTML(kAccountCreationFormHTML);
   SetNotBlacklistedMessage(kAccountCreationFormHTML);
   SetAccountCreationFormsDetectedMessage(kAccountCreationFormHTML);
   ExpectPasswordGenerationIconShown("first_password", true);
 }
 
 }  // namespace autofill