Switch to standard integer types in components/, part 3 of 4.

components/signin/core/browser/account_fetcher_service.h

Index: components/signin/core/browser/account_fetcher_service.h
diff --git a/components/signin/core/browser/account_fetcher_service.h b/components/signin/core/browser/account_fetcher_service.h
index 0545a4a6ce6dbe9ac281a377c371b95e2a88cef3..6cbb0808f382155538f1e150913dea922984e108 100644
--- a/components/signin/core/browser/account_fetcher_service.h
+++ b/components/signin/core/browser/account_fetcher_service.h
@@ -5,7 +5,10 @@
 #ifndef COMPONENTS_SIGNIN_CORE_BROWSER_ACCOUNT_FETCHER_SERVICE_H_
 #define COMPONENTS_SIGNIN_CORE_BROWSER_ACCOUNT_FETCHER_SERVICE_H_
 
+#include <stdint.h>
+
 #include "base/containers/scoped_ptr_hash_map.h"
+#include "base/macros.h"
 #include "base/threading/non_thread_safe.h"
 #include "base/timer/timer.h"
 #include "components/keyed_service/core/keyed_service.h"
@@ -30,7 +33,7 @@ class AccountFetcherService : public KeyedService,
                               public OAuth2TokenService::Observer,
                               public base::NonThreadSafe {
  public:
-  // Name of the preference that tracks the int64 representation of the last
+  // Name of the preference that tracks the int64_t representation of the last
   // time the AccountTrackerService was updated.
   static const char kLastUpdatePref[];