Switch to standard integer types in chrome/browser/, part 4 of 4.

chrome/browser/sync_file_system/sync_process_runner_unittest.cc

Index: chrome/browser/sync_file_system/sync_process_runner_unittest.cc
diff --git a/chrome/browser/sync_file_system/sync_process_runner_unittest.cc b/chrome/browser/sync_file_system/sync_process_runner_unittest.cc
index a1bd4b7f62288ab8839e172a57a586895256d4ca..d1231421ed843a43d210606147a3c8076d69e393 100644
--- a/chrome/browser/sync_file_system/sync_process_runner_unittest.cc
+++ b/chrome/browser/sync_file_system/sync_process_runner_unittest.cc
@@ -4,8 +4,12 @@
 
 #include "chrome/browser/sync_file_system/sync_process_runner.h"
 
+#include <stddef.h>
+#include <stdint.h>
+
 #include <queue>
 
+#include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ -62,7 +66,7 @@ class FakeTimerHelper : public SyncProcessRunner::TimerHelper {
     SetCurrentTime(scheduled_time_);
   }
 
-  int64 GetCurrentDelay() {
+  int64_t GetCurrentDelay() {
     EXPECT_FALSE(timer_task_.is_null());
     return (scheduled_time_ - current_time_).InMilliseconds();
   }