crbug.com/127841 - Request Tablet Site on CB with touch screen.

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 60f6e53b7632dca4fe1808e6f174c2244b629846..d31602048d4b889f9de3f2b6eb125ddfd7e6542b 100644
--- a/webkit/glue/user_agent.h
+++ b/webkit/glue/user_agent.h
@@ -32,6 +32,12 @@ void SetUserAgentOSInfo(const std::string& os_info);
 // product name.
 std::string BuildUserAgentFromProduct(const std::string& product);
 
+// Helper function to generate user agent string from current
+// user agent string by replacing a part so to appear to be
+// a tablet device (for Request Tablet Site)
+std::string BuildUserAgentOverrideForTabletSiteFromUserAgent(
+    const std::string& user_agent);
+
 }  // namespace webkit_glue
 
 #endif  // WEBKIT_GLUE_USER_AGENT_H_