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

chrome/browser/android/metrics/uma_utils.cc

Index: chrome/browser/android/metrics/uma_utils.cc
diff --git a/chrome/browser/android/metrics/uma_utils.cc b/chrome/browser/android/metrics/uma_utils.cc
index 12d9f18e8cdc5b484e0e324708ffc567ded9931f..3d8c4157be14b73640b5b34ffd4aa870d540aefd 100644
--- a/chrome/browser/android/metrics/uma_utils.cc
+++ b/chrome/browser/android/metrics/uma_utils.cc
@@ -4,6 +4,8 @@
 
 #include "chrome/browser/android/metrics/uma_utils.h"
 
+#include <stdint.h>
+
 #include "jni/UmaUtils_jni.h"
 
 namespace chrome {
@@ -11,7 +13,7 @@ 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);
 }