Use precisely sized integer types in histograms code.

base/metrics/histogram_base.h

 // Copyright (c) 2012 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 BASE_METRICS_HISTOGRAM_BASE_H_
 #define BASE_METRICS_HISTOGRAM_BASE_H_
 
+#include <stdint.h>
+
 #include <string>
 #include <vector>
 
 #include "base/atomicops.h"
 #include "base/base_export.h"
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string_piece.h"
 #include "base/time/time.h"
 
@@ skipping 24 matching lines @@
 
 // Create or find existing histogram that matches the pickled info.
 // Returns NULL if the pickled data has problems.
 BASE_EXPORT_PRIVATE HistogramBase* DeserializeHistogramInfo(
     PickleIterator* iter);
 
 ////////////////////////////////////////////////////////////////////////////////
 
 class BASE_EXPORT HistogramBase {
  public:
-  typedef int Sample;                    // Used for samples.
+  typedef int32_t Sample;                // Used for samples.
   typedef subtle::Atomic32 AtomicCount;  // Used to count samples.
-  typedef int32 Count;  // Used to manipulate counts in temporaries.
+  typedef int32_t Count;  // Used to manipulate counts in temporaries.
 
   static const Sample kSampleType_MAX;  // INT_MAX
 
   enum Flags {
     kNoFlags = 0,
 
     // Histogram should be UMA uploaded.
     kUmaTargetedHistogramFlag = 0x1,
 
     // Indicates that this is a stability histogram. This flag exists to specify
@@ skipping 27 matching lines @@
   virtual ~HistogramBase();
 
   std::string histogram_name() const { return histogram_name_; }
 
   // Comapres |name| to the histogram name and triggers a DCHECK if they do not
   // match. This is a helper function used by histogram macros, which results in
   // in more compact machine code being generated by the macros.
   void CheckName(const StringPiece& name) const;
 
   // Operations with Flags enum.
-  int32 flags() const { return flags_; }
-  void SetFlags(int32 flags);
-  void ClearFlags(int32 flags);
+  int32_t flags() const { return flags_; }
+  void SetFlags(int32_t flags);
+  void ClearFlags(int32_t flags);
 
   virtual HistogramType GetHistogramType() const = 0;
 
   // Whether the histogram has construction arguments as parameters specified.
   // For histograms that don't have the concept of minimum, maximum or
   // bucket_count, this function always returns false.
   virtual bool HasConstructionArguments(Sample expected_minimum,
                                         Sample expected_maximum,
                                         size_t expected_bucket_count) const = 0;
 
@@ skipping 51 matching lines @@
   const std::string GetSimpleAsciiBucketRange(Sample sample) const;
 
   // Write textual description of the bucket contents (relative to histogram).
   // Output is the count in the buckets, as well as the percentage.
   void WriteAsciiBucketValue(Count current,
                              double scaled_sum,
                              std::string* output) const;
 
  private:
   const std::string histogram_name_;
-  int32 flags_;
+  int32_t flags_;
 
   DISALLOW_COPY_AND_ASSIGN(HistogramBase);
 };
 
 }  // namespace base
 
 #endif  // BASE_METRICS_HISTOGRAM_BASE_H_