Move WebUIMessageHandler to its own file in the public directory and put it in the content namesp...

chrome/browser/ui/webui/net_internals_ui_browsertest.cc

Index: chrome/browser/ui/webui/net_internals_ui_browsertest.cc
===================================================================
--- chrome/browser/ui/webui/net_internals_ui_browsertest.cc	(revision 116051)
+++ chrome/browser/ui/webui/net_internals_ui_browsertest.cc	(working copy)
@@ -20,6 +20,7 @@
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/browser/renderer_host/render_view_host.h"
 #include "content/browser/tab_contents/tab_contents.h"
+#include "content/public/browser/web_ui_message_handler.h"
 #include "content/test/test_browser_thread.h"
 #include "googleurl/src/gurl.h"
 #include "net/base/address_list.h"
@@ -33,6 +34,7 @@
 #include "testing/gtest/include/gtest/gtest.h"
 
 using content::BrowserThread;
+using content::WebUIMessageHandler;
 
 namespace {