Switch to standard integer types in chrome/browser/, part 1 of 4.

chrome/browser/android/metrics/uma_utils.cc

 // Copyright 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/android/metrics/uma_utils.h"
 
+#include <stdint.h>
+
 #include "jni/UmaUtils_jni.h"
 
 namespace chrome {
 namespace android {
 
 base::Time GetMainEntryPointTime() {
   JNIEnv* env = base::android::AttachCurrentThread();
-  int64 startTimeUnixMs = Java_UmaUtils_getMainEntryPointTime(env);
+  int64_t startTimeUnixMs = Java_UmaUtils_getMainEntryPointTime(env);
   return base::Time::UnixEpoch() +
          base::TimeDelta::FromMilliseconds(startTimeUnixMs);
 }
 
 bool RegisterStartupMetricUtils(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace android
 }  // namespace chrome