Add a content::GetUserAgent() to wrap webkit_glue::GetUserAgent()

content/common/content_client.cc

Index: content/common/content_client.cc
diff --git a/content/common/content_client.cc b/content/common/content_client.cc
index 4622ce45b9607f812869637e6dccaca96588b6ef..ed46636e8b2c7984b802e54f1c4807ac8fb5f3cc 100644
--- a/content/common/content_client.cc
+++ b/content/common/content_client.cc
@@ -4,6 +4,7 @@
 
 #include "content/common/content_client.h"
 
+#include "base/logging.h"
 #include "base/string_piece.h"
 #include "webkit/glue/webkit_glue.h"
 
@@ -32,6 +33,11 @@ ContentClient* GetContentClient() {
   return g_client;
 }
 
+const std::string& GetUserAgent(const GURL& url) {
+  DCHECK(g_client);
+  return webkit_glue::GetUserAgent(url);
+}
+
 ContentClient::ContentClient()
     : browser_(NULL), plugin_(NULL), renderer_(NULL), utility_(NULL) {
 }