Move BrowserMessageFilter to public, and into content namespace.

chrome/browser/automation/automation_resource_message_filter.h

Index: chrome/browser/automation/automation_resource_message_filter.h
diff --git a/chrome/browser/automation/automation_resource_message_filter.h b/chrome/browser/automation/automation_resource_message_filter.h
index d95886d5200261d0df265c611173281402d44eaf..1fbe22df8dbe8b9fc938b5bf0b3ad00c88ce6b22 100644
--- a/chrome/browser/automation/automation_resource_message_filter.h
+++ b/chrome/browser/automation/automation_resource_message_filter.h
@@ -16,9 +16,12 @@
 #include "net/base/completion_callback.h"
 
 class GURL;
-class BrowserMessageFilter;
 class URLRequestAutomationJob;
 
+namespace content {
+class BrowserMessageFilter;
+}  // namespace content
+
 namespace net {
 class URLRequestContext;
 }  // namespace net
@@ -109,7 +112,7 @@ class AutomationResourceMessageFilter
 
   // Retrieves cookies for the url passed in from the external host. The
   // callback passed in is notified on success or failure asynchronously.
-  static void GetCookiesForUrl(BrowserMessageFilter* filter,
+  static void GetCookiesForUrl(content::BrowserMessageFilter* filter,
                                net::URLRequestContext* context,
                                int render_process_id,
                                IPC::Message* reply_msg,