Reverting this as it causes browser tests on the Linux ChromiumOS builder to fail.

chrome/browser/signin/signin_manager_fake.cc

Index: chrome/browser/signin/signin_manager_fake.cc
===================================================================
--- chrome/browser/signin/signin_manager_fake.cc	(revision 150390)
+++ chrome/browser/signin/signin_manager_fake.cc	(working copy)
@@ -4,13 +4,8 @@
 
 #include "chrome/browser/signin/signin_manager_fake.h"
 
-#include "chrome/common/chrome_notification_types.h"
-#include "content/public/browser/notification_service.h"
+FakeSigninManager::FakeSigninManager() {}
 
-FakeSigninManager::FakeSigninManager(Profile* profile) {
-  profile_ = profile;
-}
-
 FakeSigninManager::~FakeSigninManager() {}
 
 void FakeSigninManager::StartSignIn(const std::string& username,
@@ -34,13 +29,9 @@
 
 void FakeSigninManager::SignOut() {
   authenticated_username_.clear();
-  content::NotificationService::current()->Notify(
-      chrome::NOTIFICATION_GOOGLE_SIGNED_OUT,
-      content::Source<Profile>(profile_),
-      content::NotificationService::NoDetails());
 }
 
 // static
 ProfileKeyedService* FakeSigninManager::Build(Profile* profile) {
-  return new FakeSigninManager(profile);
+  return new FakeSigninManager();
 }