Rename CountSetBits32 to CountPopulation32 for consistency.

src/data-flow.cc

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/data-flow.h"
 
 #include "src/base/bits.h"
 #include "src/scopes.h"
 
 namespace v8 {
@@ skipping 27 matching lines @@
   val = SkipZeroBytes(val);
   val = SkipZeroBits(val);
   current_value_ = val >> 1;
 }
 
 
 int BitVector::Count() const {
   int count = 0;
   for (int i = 0; i < data_length_; i++) {
     int data = data_[i];
-    if (data != 0) count += base::bits::CountSetBits32(data);
+    if (data != 0) count += base::bits::CountPopulation32(data);
   }
   return count;
 }
 
 }  // namespace internal
 }  // namespace v8