Revert 180055: Very likely caused http://crbug.com/173885

content/browser/webui/content_web_ui_controller_factory.cc

Index: content/browser/webui/content_web_ui_controller_factory.cc
===================================================================
--- content/browser/webui/content_web_ui_controller_factory.cc	(revision 180281)
+++ content/browser/webui/content_web_ui_controller_factory.cc	(working copy)
@@ -7,7 +7,6 @@
 #include "content/browser/gpu/gpu_internals_ui.h"
 #include "content/browser/media/media_internals_ui.h"
 #include "content/browser/media/webrtc_internals_ui.h"
-#include "content/browser/tracing/tracing_ui.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_ui.h"
 #include "content/public/common/url_constants.h"
@@ -17,9 +16,6 @@
 WebUI::TypeID ContentWebUIControllerFactory::GetWebUIType(
       BrowserContext* browser_context, const GURL& url) const {
   if (url.host() == chrome::kChromeUIWebRTCInternalsHost ||
-#if !defined(OS_ANDROID)
-      url.host() == chrome::kChromeUITracingHost ||
-#endif
       url.host() == chrome::kChromeUIGpuHost ||
       url.host() == chrome::kChromeUIMediaInternalsHost) {
     return const_cast<ContentWebUIControllerFactory*>(this);
@@ -45,10 +41,6 @@
     return new GpuInternalsUI(web_ui);
   if (url.host() == chrome::kChromeUIMediaInternalsHost)
     return new MediaInternalsUI(web_ui);
-#if !defined(OS_ANDROID)
-  if (url.host() == chrome::kChromeUITracingHost)
-    return new TracingUI(web_ui);
-#endif
 
   return NULL;
 }