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

net/base/sdch_manager.cc

Index: net/base/sdch_manager.cc
===================================================================
--- net/base/sdch_manager.cc	(revision 10269)
+++ net/base/sdch_manager.cc	(working copy)
@@ -32,7 +32,7 @@
 
 // static
 void SdchManager::SdchErrorRecovery(ProblemCodes problem) {
-  static LinearHistogram histogram(L"Sdch.ProblemCodes_2", MIN_PROBLEM_CODE,
+  static LinearHistogram histogram("Sdch.ProblemCodes_2", MIN_PROBLEM_CODE,
                                    MAX_PROBLEM_CODE - 1, MAX_PROBLEM_CODE);
   histogram.SetFlags(kUmaTargetedHistogramFlag);
   histogram.Add(problem);
@@ -263,7 +263,7 @@
     return false;
   }
 
-  UMA_HISTOGRAM_COUNTS(L"Sdch.Dictionary size loaded", dictionary_text.size());
+  UMA_HISTOGRAM_COUNTS("Sdch.Dictionary size loaded", dictionary_text.size());
   DLOG(INFO) << "Loaded dictionary with client hash " << client_hash <<
       " and server hash " << server_hash;
   Dictionary* dictionary =
@@ -304,7 +304,7 @@
   }
   // Watch to see if we have corrupt or numerous dictionaries.
   if (count > 0)
-    UMA_HISTOGRAM_COUNTS(L"Sdch.Advertisement_Count", count);
+    UMA_HISTOGRAM_COUNTS("Sdch.Advertisement_Count", count);
 }
 
 SdchManager::Dictionary::Dictionary(const std::string& dictionary_text,