Cleanup histogram classes mixing SetFlags into FactoryGet arguments...

chrome/browser/renderer_host/buffered_resource_handler.cc

Index: chrome/browser/renderer_host/buffered_resource_handler.cc
===================================================================
--- chrome/browser/renderer_host/buffered_resource_handler.cc	(revision 35277)
+++ chrome/browser/renderer_host/buffered_resource_handler.cc	(working copy)
@@ -30,22 +30,19 @@
 void RecordSnifferMetrics(bool sniffing_blocked,
                           bool we_would_like_to_sniff,
                           const std::string& mime_type) {
-  static scoped_refptr<Histogram> nosniff_usage =
-      BooleanHistogram::BooleanHistogramFactoryGet("nosniff.usage");
-  nosniff_usage->SetFlags(kUmaTargetedHistogramFlag);
+  static scoped_refptr<Histogram> nosniff_usage = BooleanHistogram::FactoryGet(
+      "nosniff.usage", Histogram::kUmaTargetedHistogramFlag);
   nosniff_usage->AddBoolean(sniffing_blocked);
 
   if (sniffing_blocked) {
     static scoped_refptr<Histogram> nosniff_otherwise =
-        BooleanHistogram::BooleanHistogramFactoryGet(
-            "nosniff.otherwise");
-    nosniff_otherwise->SetFlags(kUmaTargetedHistogramFlag);
+        BooleanHistogram::FactoryGet("nosniff.otherwise",
+                                     Histogram::kUmaTargetedHistogramFlag);
     nosniff_otherwise->AddBoolean(we_would_like_to_sniff);
 
     static scoped_refptr<Histogram> nosniff_empty_mime_type =
-        BooleanHistogram::BooleanHistogramFactoryGet(
-            "nosniff.empty_mime_type");
-    nosniff_empty_mime_type->SetFlags(kUmaTargetedHistogramFlag);
+        BooleanHistogram::FactoryGet("nosniff.empty_mime_type",
+                                     Histogram::kUmaTargetedHistogramFlag);
     nosniff_empty_mime_type->AddBoolean(mime_type.empty());
   }
 }