This is the fourth CL of several that will eventually replace TokenService with

chrome/browser/chromeos/login/oauth2_login_verifier.cc

 // Copyright (c) 2013 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 "chrome/browser/chromeos/login/oauth2_login_verifier.h"
 
 #include <vector>
 
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
@@ skipping 89 matching lines @@
   gaia_fetcher_.reset(
       new GaiaAuthFetcher(this,
                           std::string(GaiaConstants::kChromeOSSource),
                           user_request_context_.get()));
   gaia_fetcher_->StartTokenFetchForUberAuthExchange(access_token_);
 }
 
 
 void OAuth2LoginVerifier::OnUberAuthTokenSuccess(
     const std::string& uber_token) {
-  LOG(INFO) << "OAuthLogin(uber_token) successful!";
+  VLOG(1) << "OAuthLogin(uber_token) successful!";
   retry_count_ = 0;
   gaia_token_ = uber_token;
   StartMergeSession();
 }
 
 void OAuth2LoginVerifier::OnUberAuthTokenFailure(
     const GoogleServiceAuthError& error) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   LOG(WARNING) << "OAuthLogin(uber_token) failed,"
              << " error: " << error.state();
   RetryOnError("OAuthLoginUberToken", error,
                base::Bind(&OAuth2LoginVerifier::StartOAuthLoginForUberToken,
                           AsWeakPtr()),
                base::Bind(&Delegate::OnOAuthLoginFailure,
                           base::Unretained(delegate_)));
 }
 
 void OAuth2LoginVerifier::StartOAuthLoginForGaiaCredentials() {
   // No service will fetch us uber auth token.
   gaia_fetcher_.reset(
       new GaiaAuthFetcher(this,
                           std::string(GaiaConstants::kChromeOSSource),
                           user_request_context_.get()));
   gaia_fetcher_->StartOAuthLogin(access_token_, EmptyString());
 }
 
 void OAuth2LoginVerifier::OnClientLoginSuccess(
     const ClientLoginResult& gaia_credentials) {
-  LOG(INFO) << "OAuthLogin(SID+LSID) successful!";
+  VLOG(1) << "OAuthLogin(SID+LSID) successful!";
   retry_count_ = 0;
   delegate_->OnOAuthLoginSuccess(gaia_credentials);
 }
 
 void OAuth2LoginVerifier::OnClientLoginFailure(
     const GoogleServiceAuthError& error) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   LOG(WARNING) << "OAuthLogin(SID+LSID failed),"
              << " error: " << error.state();
   RetryOnError(
       "OAuthLoginGaiaCred", error,
       base::Bind(&OAuth2LoginVerifier::StartOAuthLoginForGaiaCredentials,
                  AsWeakPtr()),
       base::Bind(&Delegate::OnOAuthLoginFailure,
                  base::Unretained(delegate_)));
 }
 
 void OAuth2LoginVerifier::StartMergeSession() {
   DCHECK(!gaia_token_.empty());
   gaia_fetcher_.reset(
       new GaiaAuthFetcher(this,
                           std::string(GaiaConstants::kChromeOSSource),
                           user_request_context_.get()));
   gaia_fetcher_->StartMergeSession(gaia_token_);
 }
 
 void OAuth2LoginVerifier::OnMergeSessionSuccess(const std::string& data) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  LOG(INFO) << "MergeSession successful.";
+  VLOG(1) << "MergeSession successful.";
   delegate_->OnSessionMergeSuccess();
-  // Get GAIA credentials needed to kick off TokenService and friends.
+  // Get GAIA credentials needed to kick off OAuth2TokenService and friends.
   StartOAuthLoginForGaiaCredentials();
 }
 
 void OAuth2LoginVerifier::OnMergeSessionFailure(
     const GoogleServiceAuthError& error) {
   LOG(WARNING) << "Failed MergeSession request,"
              << " error: " << error.state();
   // If MergeSession from GAIA service token fails, retry the session restore
   // from OAuth2 refresh token. If that failed too, signal the delegate.
   RetryOnError(
       "MergeSession",
       error,
       base::Bind(&OAuth2LoginVerifier::StartMergeSession,
                  AsWeakPtr()),
       base::Bind(&Delegate::OnSessionMergeFailure,
                  base::Unretained(delegate_)));
 }
 
 void OAuth2LoginVerifier::OnGetTokenSuccess(
     const OAuth2TokenService::Request* request,
     const std::string& access_token,
     const base::Time& expiration_time) {
   DCHECK_EQ(login_token_request_.get(), request);
   login_token_request_.reset();
 
-  LOG(INFO) << "Got OAuth2 access token!";
+  VLOG(1) << "Got OAuth2 access token!";
   retry_count_ = 0;
   access_token_ = access_token;
   StartOAuthLoginForUberToken();
 }
 
 void OAuth2LoginVerifier::OnGetTokenFailure(
     const OAuth2TokenService::Request* request,
     const GoogleServiceAuthError& error) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK_EQ(login_token_request_.get(), request);
@@ skipping 29 matching lines @@
              << operation_id;
   UMA_HISTOGRAM_ENUMERATION(
       base::StringPrintf("OAuth2Login.%sFailure", operation_id),
       error.state(),
       GoogleServiceAuthError::NUM_STATES);
 
   error_handler.Run(IsConnectionOrServiceError(error));
 }
 
 }  // namespace chromeos