Fix a bunch of clang warnings/errors.

chrome/browser/net/gaia/token_service.cc

 // Copyright (c) 2010 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/net/gaia/token_service.h"
 
 #include "base/command_line.h"
 #include "base/string_util.h"
 #include "chrome/browser/chrome_thread.h"
 #include "chrome/browser/profile.h"
@@ skipping 92 matching lines @@
                                      const std::string& auth_token) {
   DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
   web_data_service_->SetTokenForService(service, auth_token);
 }
 
 void TokenService::EraseTokensFromDB() {
   DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
   web_data_service_->RemoveAllTokens();
 }
 
-const bool TokenService::AreCredentialsValid() const {
+bool TokenService::AreCredentialsValid() const {
   return !credentials_.lsid.empty() && !credentials_.sid.empty();
 }
 
-const bool TokenService::HasLsid() const {
+bool TokenService::HasLsid() const {
   return !credentials_.lsid.empty();
 }
 
 const std::string& TokenService::GetLsid() const {
   return credentials_.lsid;
 }
 
 void TokenService::StartFetchingTokens() {
   DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
   DCHECK(AreCredentialsValid());
   for (int i = 0; i < kNumServices; i++) {
     fetchers_[i]->StartIssueAuthToken(credentials_.sid,
                                       credentials_.lsid,
                                       kServices[i]);
   }
 }
 
 // Services dependent on a token will check if a token is available.
 // If it isn't, they'll go to sleep until they get a token event.
-const bool TokenService::HasTokenForService(const char* const service) const {
+bool TokenService::HasTokenForService(const char* const service) const {
   return token_map_.count(service) > 0;
 }
 
 const std::string& TokenService::GetTokenForService(
     const char* const service) const {
 
   if (token_map_.count(service) > 0) {
     // Note map[key] is not const.
     return (*token_map_.find(service)).second;
   }
@@ skipping 100 matching lines @@
 }
 
 void TokenService::Observe(NotificationType type,
                            const NotificationSource& source,
                            const NotificationDetails& details) {
   DCHECK(type == NotificationType::TOKEN_UPDATED);
   TokenAvailableDetails* tok_details =
       Details<TokenAvailableDetails>(details).ptr();
   OnIssueAuthTokenSuccess(tok_details->service(), tok_details->token());
 }