Make callers of CommandLine use it via the base:: namespace.

components/signin/core/browser/account_tracker_service.cc

 // Copyright 2014 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/account_tracker_service.h"
 
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
@@ skipping 494 matching lines @@
        it != accounts.end(); ++it) {
     OnRefreshTokenAvailable(*it);
   }
 }
 
 void AccountTrackerService::SendRefreshTokenAnnotationRequest(
     const std::string& account_id) {
 // We only need to send RefreshTokenAnnotationRequest from desktop platforms.
 #if !defined(OS_ANDROID) && !defined(OS_IOS)
   if (IsRefreshTokenDeviceIdExperimentEnabled() ||
-      CommandLine::ForCurrentProcess()->HasSwitch(
+      base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kEnableRefreshTokenAnnotationRequest)) {
     scoped_ptr<RefreshTokenAnnotationRequest> request =
         RefreshTokenAnnotationRequest::SendIfNeeded(
             signin_client_->GetPrefs(), token_service_, signin_client_,
             signin_client_->GetURLRequestContext(), account_id,
             base::Bind(
                 &AccountTrackerService::RefreshTokenAnnotationRequestDone,
                 base::Unretained(this), account_id));
     // If request was sent AccountTrackerService needs to own request till it
     // finishes.
@@ skipping 46 matching lines @@
   DCHECK(!email.empty());
   const std::string account_id = PickAccountIdForAccount(gaia, email);
   const bool already_exists = ContainsKey(accounts_, account_id);
   StartTrackingAccount(account_id);
   AccountState& state = accounts_[account_id];
   DCHECK(!already_exists || state.info.gaia == gaia);
   state.info.gaia = gaia;
   state.info.email = email;
   SaveToPrefs(state);
 }