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

chrome/browser/android/history_report/usage_reports_buffer_backend.h

 // Copyright 2015 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.
 
 #ifndef CHROME_BROWSER_ANDROID_HISTORY_REPORT_USAGE_REPORTS_BUFFER_BACKEND_H_
 #define CHROME_BROWSER_ANDROID_HISTORY_REPORT_USAGE_REPORTS_BUFFER_BACKEND_H_
 
+#include <stdint.h>
+
 #include <string>
 #include <vector>
 
 #include "base/files/file_path.h"
+#include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 
 namespace base {
 class FilePath;
 }  // namespace base
 
 namespace leveldb {
 class DB;
 }  // namespace leveldb
 
 namespace history_report {
 
 class UsageReport;
 
 // Stores usage reports which will be sent for history reporting in batches.
 class UsageReportsBufferBackend {
  public:
   explicit UsageReportsBufferBackend(const base::FilePath& dir);
 
   ~UsageReportsBufferBackend();
 
   // Creates and initializes the internal data structures.
   bool Init();
 
-  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);
 
   // Returns a set of up to |amount| usage reports.
   scoped_ptr<std::vector<UsageReport> > GetUsageReportsBatch(int amount);
 
   void Remove(const std::vector<std::string>& reports);
 
   // Clears the buffer by removing all its usage reports.
   void Clear();
 
   // Dumps internal state to string. For debuging.
   std::string Dump();
 
  private:
   // NULL until Init method is called.
   scoped_ptr<leveldb::DB> db_;
   base::FilePath db_file_name_;
 
   DISALLOW_COPY_AND_ASSIGN(UsageReportsBufferBackend);
 };
 
 }  // namespace history_report
 
 #endif  // CHROME_BROWSER_ANDROID_HISTORY_REPORT_USAGE_REPORTS_BUFFER_BACKEND_H_