Track when and how a profile is signed out via UMA.

chrome/browser/signin/signin_manager_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/signin/core/browser/signin_manager.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 212 matching lines @@
   EXPECT_EQ(oauth_tokens_fetched_[0], "rt1");
 }
 
 TEST_F(SigninManagerTest, SignOut) {
   SetUpSigninManagerAsService();
   manager_->StartSignInWithRefreshToken(
       "rt1",
       "user@gmail.com",
       "password",
       SigninManager::OAuthTokenFetchedCallback());
-  manager_->SignOut();
+  manager_->SignOut(signin_metrics::SIGNOUT_TEST);
   EXPECT_TRUE(manager_->GetAuthenticatedUsername().empty());
   // Should not be persisted anymore
   ShutDownManager();
   CreateNakedSigninManager();
   manager_->Initialize(NULL);
   EXPECT_TRUE(manager_->GetAuthenticatedUsername().empty());
 }
 
 TEST_F(SigninManagerTest, SignOutWhileProhibited) {
   SetUpSigninManagerAsService();
   EXPECT_TRUE(manager_->GetAuthenticatedUsername().empty());
 
   manager_->SetAuthenticatedUsername("user@gmail.com");
   manager_->ProhibitSignout(true);
-  manager_->SignOut();
+  manager_->SignOut(signin_metrics::SIGNOUT_TEST);
   EXPECT_FALSE(manager_->GetAuthenticatedUsername().empty());
   manager_->ProhibitSignout(false);
-  manager_->SignOut();
+  manager_->SignOut(signin_metrics::SIGNOUT_TEST);
   EXPECT_TRUE(manager_->GetAuthenticatedUsername().empty());
 }
 
 TEST_F(SigninManagerTest, TestIsWebBasedSigninFlowURL) {
   EXPECT_FALSE(SigninManager::IsWebBasedSigninFlowURL(
       GURL("http://www.google.com")));
   EXPECT_TRUE(SigninManager::IsWebBasedSigninFlowURL(
       GURL("https://accounts.google.com/ServiceLogin?service=chromiumsync")));
   EXPECT_FALSE(SigninManager::IsWebBasedSigninFlowURL(
       GURL("http://accounts.google.com/ServiceLogin?service=chromiumsync")));
@@ skipping 71 matching lines @@
             profile()->GetPrefs()->GetString(prefs::kGoogleServicesUsername));
   EXPECT_EQ("external@example.com", manager_->GetAuthenticatedUsername());
 }
 
 TEST_F(SigninManagerTest, SigninNotAllowed) {
   std::string user("user@google.com");
   profile()->GetPrefs()->SetString(prefs::kGoogleServicesUsername, user);
   profile()->GetPrefs()->SetBoolean(prefs::kSigninAllowed, false);
   SetUpSigninManagerAsService();
 }