Change DCHECK_IS_ON() to DCHECK_IS_ON

base/metrics/histogram.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.
 
 // 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).
 
 // It supports calls to accumulate either time intervals (which are processed
 // as integral number of milliseconds), or arbitrary integral units.
@@ skipping 137 matching lines @@
   do { \
     static base::subtle::AtomicWord atomic_histogram_pointer = 0; \
     base::HistogramBase* histogram_pointer( \
         reinterpret_cast<base::HistogramBase*>( \
             base::subtle::Acquire_Load(&atomic_histogram_pointer))); \
     if (!histogram_pointer) { \
       histogram_pointer = histogram_factory_get_invocation; \
       base::subtle::Release_Store(&atomic_histogram_pointer, \
           reinterpret_cast<base::subtle::AtomicWord>(histogram_pointer)); \
     } \
-    if (DCHECK_IS_ON()) \
+    if (DCHECK_IS_ON) \
       histogram_pointer->CheckName(constant_histogram_name); \
     histogram_pointer->histogram_add_method_invocation; \
   } while (0)
 
 
 //------------------------------------------------------------------------------
 // Provide easy general purpose histogram in a macro, just like stats counters.
 // The first four macros use 50 buckets.
 
 #define HISTOGRAM_TIMES(name, sample) HISTOGRAM_CUSTOM_TIMES( \
@@ skipping 515 matching lines @@
   static bool ValidateCustomRanges(const std::vector<Sample>& custom_ranges);
   static BucketRanges* CreateBucketRangesFromCustomRanges(
       const std::vector<Sample>& custom_ranges);
 
   DISALLOW_COPY_AND_ASSIGN(CustomHistogram);
 };
 
 }  // namespace base
 
 #endif  // BASE_METRICS_HISTOGRAM_H_