webkit: use string16 in webkit_glue.h

webkit/tools/test_shell/test_shell.h

Index: webkit/tools/test_shell/test_shell.h
diff --git a/webkit/tools/test_shell/test_shell.h b/webkit/tools/test_shell/test_shell.h
index b35bb592fc2e8fcfb98a53e3cc2d2dc7c2895e37..56ade05abefa807ca1e4617d375e790c58900e0c 100644
--- a/webkit/tools/test_shell/test_shell.h
+++ b/webkit/tools/test_shell/test_shell.h
@@ -259,13 +259,13 @@ public:
 
     // Writes the back-forward list data for every open window into result.
     // Should call DumpBackForwardListOfWindow on each TestShell window.
-    static void DumpAllBackForwardLists(std::wstring* result);
+    static void DumpAllBackForwardLists(string16* result);
 
     // Writes the single back-forward entry into result.
-    void DumpBackForwardEntry(int index, std::wstring* result);
+    void DumpBackForwardEntry(int index, string16* result);
 
     // Writes the back-forward list data for this test shell into result.
-    void DumpBackForwardList(std::wstring* result);
+    void DumpBackForwardList(string16* result);
 
     // Dumps the output from given test as text and/or image depending on
     // the flags set.