Remove the usage of BrowserThread::FILE in the shell_integration* files

chrome/browser/ui/content_settings/content_setting_bubble_model_unittest.cc

Index: chrome/browser/ui/content_settings/content_setting_bubble_model_unittest.cc
diff --git a/chrome/browser/ui/content_settings/content_setting_bubble_model_unittest.cc b/chrome/browser/ui/content_settings/content_setting_bubble_model_unittest.cc
index 0a7c7b8fae11de54fed5d2a1596508f520e4200c..da8207d6a48c1fcbf88facdbb8cdd609cd60fb90 100644
--- a/chrome/browser/ui/content_settings/content_setting_bubble_model_unittest.cc
+++ b/chrome/browser/ui/content_settings/content_setting_bubble_model_unittest.cc
@@ -4,6 +4,8 @@
 
 #include <stddef.h>
 
+#include <memory>
+
 #include "base/auto_reset.h"
 #include "base/command_line.h"
 #include "base/strings/utf_string_conversions.h"
@@ -859,14 +861,6 @@ class FakeDelegate : public ProtocolHandlerRegistry::Delegate {
     // side effects on other tests.
   }
 
-  scoped_refptr<shell_integration::DefaultProtocolClientWorker>
-  CreateShellWorker(
-      const shell_integration::DefaultWebClientWorkerCallback& callback,
-      const std::string& protocol) override {
-    VLOG(1) << "CreateShellWorker";
-    return NULL;
-  }
-
   void RegisterWithOSAsDefaultClient(
       const std::string& protocol,
       ProtocolHandlerRegistry* registry) override {