Use string for Histogram names since these are all ASCII anyway wide-characte...

base/process_util_win.cc

 // Copyright (c) 2006-2008 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.
 
 #include "base/process_util.h"
 
 #include <windows.h>
 #include <winternl.h>
 #include <psapi.h>
 
@@ skipping 198 matching lines @@
   }
 
   // All other exit codes indicate crashes.
 
   // TODO(jar): Remove histogramming code when UMA stats are consistent with
   // other crash metrics.
   // Histogram the low order 3 nibbles for UMA
   const int kLeastValue = 0;
   const int kMaxValue = 0xFFF;
   const int kBucketCount = kMaxValue - kLeastValue + 1;
-  static LinearHistogram least_significant_histogram(L"ExitCodes.LSNibbles",
+  static LinearHistogram least_significant_histogram("ExitCodes.LSNibbles",
       kLeastValue + 1, kMaxValue, kBucketCount);
   least_significant_histogram.SetFlags(kUmaTargetedHistogramFlag |
                                        LinearHistogram::kHexRangePrintingFlag);
   least_significant_histogram.Add(exitcode & 0xFFF);
 
   // Histogram the high order 3 nibbles
-  static LinearHistogram most_significant_histogram(L"ExitCodes.MSNibbles",
+  static LinearHistogram most_significant_histogram("ExitCodes.MSNibbles",
       kLeastValue + 1, kMaxValue, kBucketCount);
   most_significant_histogram.SetFlags(kUmaTargetedHistogramFlag |
                                       LinearHistogram::kHexRangePrintingFlag);
   // Avoid passing in negative numbers by shifting data into low end of dword.
   most_significant_histogram.Add((exitcode >> 20) & 0xFFF);
 
   // Histogram the middle order 2 nibbles
-  static LinearHistogram mid_significant_histogram(L"ExitCodes.MidNibbles",
+  static LinearHistogram mid_significant_histogram("ExitCodes.MidNibbles",
       1, 0xFF, 0x100);
   mid_significant_histogram.SetFlags(kUmaTargetedHistogramFlag |
                                       LinearHistogram::kHexRangePrintingFlag);
   mid_significant_histogram.Add((exitcode >> 12) & 0xFF);
 
   return true;
 }
 
 bool WaitForExitCode(ProcessHandle handle, int* exit_code) {
   ScopedHandle closer(handle);  // Ensure that we always close the handle.
@@ skipping 392 matching lines @@
 void EnableTerminationOnHeapCorruption() {
   // Ignore the result code. Supported on XP SP3 and Vista.
   HeapSetInformation(NULL, HeapEnableTerminationOnCorruption, NULL, 0);
 }
 
 void RaiseProcessToHighPriority() {
   SetPriorityClass(GetCurrentProcess(), HIGH_PRIORITY_CLASS);
 }
 
 }  // namespace base