Revert "Remove webkit_glue::BuildUserAgent(), change the contract in webkit_glue"

webkit/glue/user_agent.h

Index: webkit/glue/user_agent.h
diff --git a/webkit/glue/user_agent.h b/webkit/glue/user_agent.h
index 9f34c2850e78ef0d4db0792df5c49d4ce4f5c558..583eef0a02db8a63d56074ec6a54198c01132e0c 100644
--- a/webkit/glue/user_agent.h
+++ b/webkit/glue/user_agent.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 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.
 
@@ -21,9 +21,10 @@ std::string GetWebKitVersion();
 int GetWebKitMajorVersion();
 int GetWebKitMinorVersion();
 
-// Helper function to generate a full user agent string from a short
-// product name.
-std::string BuildUserAgentFromProduct(const std::string& product);
+// Helper function to generate the user agent.
+// - If mimic_windows is true, produce a fake Windows Chrome string..
+std::string BuildUserAgentHelper(bool mimic_windows,
+                                 const std::string& product);
 }  // namespace webkit_glue
 
 #endif  // WEBKIT_GLUE_USER_AGENT_H_