Split user agent code out of the 'glue' target

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 5d2594aae21b9df11d319b740e0ce912b66d4e02..e357e4bf069aae74eb5aad2a35ebacb37d646ba5 100644
--- a/webkit/glue/user_agent.h
+++ b/webkit/glue/user_agent.h
@@ -8,9 +8,23 @@
 #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();