Use a direct include of the message_loop header in content/, part 4.

content/worker/websharedworkerclient_proxy.cc

Index: content/worker/websharedworkerclient_proxy.cc
diff --git a/content/worker/websharedworkerclient_proxy.cc b/content/worker/websharedworkerclient_proxy.cc
index 427c2672d7c4bf1ca293bcea0754d5c6bd2d01b8..a2c8c4f8a19d9bbeed25f99460f177ef4a1d4e4e 100644
--- a/content/worker/websharedworkerclient_proxy.cc
+++ b/content/worker/websharedworkerclient_proxy.cc
@@ -6,7 +6,7 @@
 
 #include "base/bind.h"
 #include "base/command_line.h"
-#include "base/message_loop.h"
+#include "base/message_loop/message_loop.h"
 #include "content/child/fileapi/file_system_dispatcher.h"
 #include "content/child/fileapi/webfilesystem_callback_adapters.h"
 #include "content/child/quota_dispatcher.h"
@@ -18,12 +18,12 @@
 #include "content/worker/worker_thread.h"
 #include "content/worker/worker_webapplicationcachehost_impl.h"
 #include "ipc/ipc_logging.h"
+#include "third_party/WebKit/public/platform/WebString.h"
+#include "third_party/WebKit/public/platform/WebURL.h"
 #include "third_party/WebKit/public/web/WebDocument.h"
 #include "third_party/WebKit/public/web/WebFileSystemCallbacks.h"
 #include "third_party/WebKit/public/web/WebFrame.h"
 #include "third_party/WebKit/public/web/WebSecurityOrigin.h"
-#include "third_party/WebKit/public/platform/WebString.h"
-#include "third_party/WebKit/public/platform/WebURL.h"
 
 using WebKit::WebApplicationCacheHost;
 using WebKit::WebFrame;