Merge subprocess metrics into global StatisticsRecorder.

base/metrics/histogram.cc

 // 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.
 
 // Histogram is an object that aggregates statistics, and can summarize them in
 // various forms, including ASCII graphical, HTML, and numerically (as a
 // vector of numbers corresponding to each of the aggregating buckets).
 // See header file for details and examples.
 
 #include "base/metrics/histogram.h"
@@ skipping 46 matching lines @@
   if (*declared_max <= 0 ||
       *declared_min <= 0 ||
       *declared_max < *declared_min ||
       INT_MAX / sizeof(HistogramBase::Count) <= *bucket_count ||
       *bucket_count < 2) {
     DLOG(ERROR) << "Values error decoding Histogram: " << histogram_name;
     return false;
   }
 
   // We use the arguments to find or create the local version of the histogram
-  // in this process, so we need to clear the IPC flag.
-  DCHECK(*flags & HistogramBase::kIPCSerializationSourceFlag);
+  // in this process, so we need to clear any IPC flag.
   *flags &= ~HistogramBase::kIPCSerializationSourceFlag;
 
   return true;
 }
 
 bool ValidateRangeChecksum(const HistogramBase& histogram,
                            uint32_t range_checksum) {
   const Histogram& casted_histogram =
       static_cast<const Histogram&>(histogram);
 
@@ skipping 1100 matching lines @@
     Sample sample = custom_ranges[i];
     if (sample < 0 || sample > HistogramBase::kSampleType_MAX - 1)
       return false;
     if (sample != 0)
       has_valid_range = true;
   }
   return has_valid_range;
 }
 
 }  // namespace base