Add base:: namespace to straggling string16s left in chrome/browser/ui.

chrome/browser/ui/search/search_tab_helper_unittest.cc

Index: chrome/browser/ui/search/search_tab_helper_unittest.cc
diff --git a/chrome/browser/ui/search/search_tab_helper_unittest.cc b/chrome/browser/ui/search/search_tab_helper_unittest.cc
index 4f4506d0aa4572a78b6967575d8431c328b406fe..0abd72a7909b6d3266ae85fcb4764dad3aef5d24 100644
--- a/chrome/browser/ui/search/search_tab_helper_unittest.cc
+++ b/chrome/browser/ui/search/search_tab_helper_unittest.cc
@@ -294,8 +294,8 @@ TEST_F(SearchTabHelperWindowTest, OnProvisionalLoadFailRedirectNTPToLocal) {
   // A failed provisional load of a cacheable NTP should be redirected to local
   // NTP.
   const GURL cacheableNTPURL = chrome::GetNewTabPageURL(profile());
-  search_tab_helper->DidFailProvisionalLoad(1, string16(), true,
-      cacheableNTPURL, 1, string16(), NULL);
+  search_tab_helper->DidFailProvisionalLoad(1, base::string16(), true,
+      cacheableNTPURL, 1, base::string16(), NULL);
   CommitPendingLoad(controller);
   EXPECT_EQ(GURL(chrome::kChromeSearchLocalNtpUrl),
                  controller->GetLastCommittedEntry()->GetURL());
@@ -314,8 +314,8 @@ TEST_F(SearchTabHelperWindowTest, OnProvisionalLoadFailDontRedirectIfAborted) {
   // A failed provisional load of a cacheable NTP should be redirected to local
   // NTP.
   const GURL cacheableNTPURL = chrome::GetNewTabPageURL(profile());
-  search_tab_helper->DidFailProvisionalLoad(1, string16(), true,
-      cacheableNTPURL, net::ERR_ABORTED, string16(), NULL);
+  search_tab_helper->DidFailProvisionalLoad(1, base::string16(), true,
+      cacheableNTPURL, net::ERR_ABORTED, base::string16(), NULL);
   CommitPendingLoad(controller);
   EXPECT_EQ(GURL("chrome://blank"),
                  controller->GetLastCommittedEntry()->GetURL());
@@ -332,8 +332,8 @@ TEST_F(SearchTabHelperWindowTest, OnProvisionalLoadFailDontRedirectNonNTP) {
   ASSERT_NE(static_cast<SearchTabHelper*>(NULL), search_tab_helper);
 
   // Any other web page shouldn't be redirected when provisional load fails.
-  search_tab_helper->DidFailProvisionalLoad(1, string16(), true,
-      GURL("http://www.example.com"), 1, string16(), NULL);
+  search_tab_helper->DidFailProvisionalLoad(1, base::string16(), true,
+      GURL("http://www.example.com"), 1, base::string16(), NULL);
   CommitPendingLoad(controller);
   EXPECT_NE(GURL(chrome::kChromeSearchLocalNtpUrl),
                  controller->GetLastCommittedEntry()->GetURL());