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

chrome/browser/android/history_report/usage_reports_buffer_service.h

Index: chrome/browser/android/history_report/usage_reports_buffer_service.h
diff --git a/chrome/browser/android/history_report/usage_reports_buffer_service.h b/chrome/browser/android/history_report/usage_reports_buffer_service.h
index f98b3b5d3f47982506e05d82bfdc655a4a4c907b..2c8bdaef94b687943c93c4fa0dde28e6353c332c 100644
--- a/chrome/browser/android/history_report/usage_reports_buffer_service.h
+++ b/chrome/browser/android/history_report/usage_reports_buffer_service.h
@@ -5,9 +5,12 @@
 #ifndef CHROME_BROWSER_ANDROID_HISTORY_REPORT_USAGE_REPORTS_BUFFER_SERVICE_H_
 #define CHROME_BROWSER_ANDROID_HISTORY_REPORT_USAGE_REPORTS_BUFFER_SERVICE_H_
 
+#include <stdint.h>
+
 #include <string>
 #include <vector>
 
+#include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/threading/sequenced_worker_pool.h"
 
@@ -32,10 +35,10 @@ class UsageReportsBufferService {
   void Init();
 
   // Add report about page visit to the buffer. It's asynchronous.
-  void AddVisit(const std::string& id, int64 timestamp_ms, bool typed_visit);
+  void AddVisit(const std::string& id, int64_t timestamp_ms, bool typed_visit);
 
   // Get a batch of usage reports of size up to |batch_size|. It's synchronous.
-  scoped_ptr<std::vector<UsageReport> > GetUsageReportsBatch(int32 batch_size);
+  scoped_ptr<std::vector<UsageReport>> GetUsageReportsBatch(int32_t batch_size);
 
   // Remove given usage reports from buffer. It's synchronous.
   void Remove(const std::vector<std::string>& report_ids);