Switch to using the message loop rather than gtk_main().

webkit/glue/webkit_glue.cc

Index: webkit/glue/webkit_glue.cc
diff --git a/webkit/glue/webkit_glue.cc b/webkit/glue/webkit_glue.cc
index e59bd6850480f5b9380c6107b3393a1319b2003c..1c5d0fd25cfe766715b6d1ef97343dbc3b802c53 100644
--- a/webkit/glue/webkit_glue.cc
+++ b/webkit/glue/webkit_glue.cc
@@ -403,6 +403,15 @@ void SetUserAgentToDefault() {
       WEBKIT_VERSION_MAJOR,
       WEBKIT_VERSION_MINOR
       );
+#elif defined(OS_LINUX)
+  // TODO(agl): We don't have version information embedded in files under Linux
+  // so we use the following string which is based off the UA string for
+  // Windows. Some solution for embedding the Chrome version number needs to be
+  // found here.
+  StringAppendF(
+      &default_user_agent,
+      "Mozilla/5.0 (Linux; U; en-US) AppleWebKit/525.13 "
+      "(KHTML, like Gecko) Chrome/0.2.149.27 Safari/525.13");
 #else
   // TODO(port): we need something like FileVersionInfo for our UA string.
   NOTIMPLEMENTED();