histogram API of WebKitClient implemented in chromium/webkit/glue

webkit/glue/webkitclient_impl.h

Index: webkit/glue/webkitclient_impl.h
diff --git a/webkit/glue/webkitclient_impl.h b/webkit/glue/webkitclient_impl.h
index 30615485a6b70c76ecbab43add041fbdae083a74..2836e8e1edf7baeafe7cd180396b4f638d47806d 100644
--- a/webkit/glue/webkitclient_impl.h
+++ b/webkit/glue/webkitclient_impl.h
@@ -45,6 +45,10 @@ class WebKitClientImpl : public WebKit::WebKitClient {
   virtual void getPluginList(bool refresh, WebKit::WebPluginListBuilder*);
   virtual void decrementStatsCounter(const char* name);
   virtual void incrementStatsCounter(const char* name);
+  virtual void histogramCustomCounts(
+    const char* name, int sample, int min, int max, int bucket_count);
+  virtual void histogramEnumeration(
+    const char* name, int sample, int boundary_value);
   virtual void traceEventBegin(const char* name, void* id, const char* extra);
   virtual void traceEventEnd(const char* name, void* id, const char* extra);
   virtual WebKit::WebData loadResource(const char* name);