Add base:: to string16 in chrome_frame/.

chrome_frame/simple_resource_loader.cc

Index: chrome_frame/simple_resource_loader.cc
diff --git a/chrome_frame/simple_resource_loader.cc b/chrome_frame/simple_resource_loader.cc
index e6d5c6c3c2ea980f7bb4f2e5b17961f362ff691c..ad38feee0df6ae1751bd947134a2ca3b2f67b7a5 100644
--- a/chrome_frame/simple_resource_loader.cc
+++ b/chrome_frame/simple_resource_loader.cc
@@ -245,10 +245,10 @@ std::wstring SimpleResourceLoader::GetLocalizedResource(int message_id) {
   }
 
   // Data pack encodes strings as either UTF8 or UTF16.
-  string16 msg;
+  base::string16 msg;
   if (data_pack_->GetTextEncodingType() == ui::DataPack::UTF16) {
-    msg = string16(reinterpret_cast<const char16*>(data.data()),
-                   data.length() / 2);
+    msg = base::string16(reinterpret_cast<const char16*>(data.data()),
+                         data.length() / 2);
   } else if (data_pack_->GetTextEncodingType() == ui::DataPack::UTF8) {
     msg = UTF8ToUTF16(data);
   }