Remove custom counts histogram from the blink API.

third_party/WebKit/Source/bindings/core/v8/WindowProxy.cpp

 /*
  * Copyright (C) 2008, 2009, 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 35 matching lines @@
 #include "core/frame/LocalFrame.h"
 #include "core/frame/csp/ContentSecurityPolicy.h"
 #include "core/html/DocumentNameCollection.h"
 #include "core/html/HTMLCollection.h"
 #include "core/html/HTMLIFrameElement.h"
 #include "core/inspector/InspectorInstrumentation.h"
 #include "core/inspector/MainThreadDebugger.h"
 #include "core/loader/DocumentLoader.h"
 #include "core/loader/FrameLoader.h"
 #include "core/loader/FrameLoaderClient.h"
+#include "platform/Histogram.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/ScriptForbiddenScope.h"
 #include "platform/TraceEvent.h"
 #include "platform/heap/Handle.h"
 #include "platform/weborigin/SecurityOrigin.h"
 #include "public/platform/Platform.h"
 #include "wtf/Assertions.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/StringExtras.h"
 #include "wtf/text/CString.h"
@@ skipping 261 matching lines @@
         }
     }
     v8::ExtensionConfiguration extensionConfiguration(extensionNames.size(), extensionNames.data());
 
     v8::Local<v8::Context> context = v8::Context::New(m_isolate, &extensionConfiguration, globalTemplate, m_global.newLocal(m_isolate));
     if (context.IsEmpty())
         return;
     m_scriptState = ScriptState::create(context, m_world);
 
     double contextCreationDurationInMilliseconds = (currentTime() - contextCreationStartInSeconds) * 1000;
-    const char* histogramName = "WebCore.WindowProxy.createContext.MainWorld";
-    if (!m_world->isMainWorld())
-        histogramName = "WebCore.WindowProxy.createContext.IsolatedWorld";
-    Platform::current()->histogramCustomCounts(histogramName, contextCreationDurationInMilliseconds, 0, 10000, 50);
+    if (!m_world->isMainWorld()) {
+        DEFINE_STATIC_LOCAL(CustomCountHistogram, isolatedWorldHistogram, ("WebCore.WindowProxy.createContext.IsolatedWorld", 0, 10000, 50));
+        isolatedWorldHistogram.count(contextCreationDurationInMilliseconds);
+    } else {
+        DEFINE_STATIC_LOCAL(CustomCountHistogram, mainWorldHistogram, ("WebCore.WindowProxy.createContext.MainWorld", 0, 10000, 50));
+        mainWorldHistogram.count(contextCreationDurationInMilliseconds);
+    }
 }
 
 static v8::Local<v8::Object> toInnerGlobalObject(v8::Local<v8::Context> context)
 {
     return v8::Local<v8::Object>::Cast(context->Global()->GetPrototype());
 }
 
 bool WindowProxy::installDOMWindow()
 {
     DOMWindow* window = m_frame->domWindow();
@@ skipping 216 matching lines @@
 }
 
 void WindowProxy::updateSecurityOrigin(SecurityOrigin* origin)
 {
     if (!isContextInitialized())
         return;
     setSecurityToken(origin);
 }
 
 } // namespace blink