Split user agent code out of the 'glue' target

webkit/glue/user_agent.h

 // Copyright (c) 2012 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.
 
 #ifndef WEBKIT_GLUE_USER_AGENT_H_
 #define WEBKIT_GLUE_USER_AGENT_H_
 
 #include <string>
 
 #include "base/basictypes.h"
+#include "webkit/glue/webkit_glue_export.h"
+
+class GURL;
 
 namespace webkit_glue {
 
+// Sets the user agent.  Pass true for overriding if this is a custom
+// user agent instead of the default one (in order to turn off any browser
+// sniffing workarounds). This must be called before GetUserAgent() can
+// be called.
+WEBKIT_GLUE_EXPORT void SetUserAgent(const std::string& user_agent,
+                                     bool overriding);
+
+// Returns the user agent to use for the given URL. SetUserAgent() must
+// be called prior to calling this function.
+WEBKIT_GLUE_EXPORT const std::string& GetUserAgent(const GURL& url);
+
 // Builds a User-agent compatible string that describes the OS and CPU type.
 std::string BuildOSCpuInfo();
 
 // Returns the WebKit version, in the form "major.minor (branch@revision)".
 std::string GetWebKitVersion();
 
 // The following 2 functions return the major and minor webkit versions.
 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);
 
 }  // namespace webkit_glue
 
 #endif  // WEBKIT_GLUE_USER_AGENT_H_