Expose performance.memory in workers

Source/core/workers/WorkerMessagingProxy.cpp

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  * Copyright (C) 2009 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 17 matching lines @@
 #include "config.h"
 
 #include "core/workers/WorkerMessagingProxy.h"
 
 #include "core/dom/CrossThreadTask.h"
 #include "core/dom/Document.h"
 #include "core/events/ErrorEvent.h"
 #include "core/events/MessageEvent.h"
 #include "core/frame/ContentSecurityPolicy.h"
 #include "core/frame/DOMWindow.h"
+#include "core/frame/Settings.h"
 #include "core/inspector/InspectorInstrumentation.h"
 #include "core/inspector/ScriptCallStack.h"
 #include "core/inspector/WorkerDebuggerAgent.h"
 #include "core/inspector/WorkerInspectorController.h"
 #include "core/loader/DocumentLoadTiming.h"
 #include "core/loader/DocumentLoader.h"
 #include "core/page/PageGroup.h"
 #include "core/workers/DedicatedWorkerGlobalScope.h"
 #include "core/workers/DedicatedWorkerThread.h"
 #include "core/workers/Worker.h"
@@ skipping 56 matching lines @@
     ASSERT((m_executionContext->isDocument() && isMainThread())
         || (m_executionContext->isWorkerGlobalScope() && toWorkerGlobalScope(m_executionContext.get())->thread()->isCurrentThread()));
 }
 
 void WorkerMessagingProxy::startWorkerGlobalScope(const KURL& scriptURL, const String& userAgent, const String& sourceCode, WorkerThreadStartMode startMode)
 {
     // FIXME: This need to be revisited when we support nested worker one day
     ASSERT(m_executionContext->isDocument());
     Document* document = toDocument(m_executionContext.get());
 
-    OwnPtr<WorkerThreadStartupData> startupData = WorkerThreadStartupData::create(scriptURL, userAgent, sourceCode, startMode, document->contentSecurityPolicy()->deprecatedHeader(), document->contentSecurityPolicy()->deprecatedHeaderType(), m_workerClients.release());
+    OwnPtr<WorkerSettings> settings = WorkerSettings::create();
+    if (document->settings())
+        settings->setMemoryInfoEnabled(document->settings()->memoryInfoEnabled());

[kinuko, 2014/03/04 04:34:35]

Could we have these settings-to-settings copy methods in a more centralized way?
Say, could we write WorkerSettings::create(document->settings()) to copy all
relevant settings from documents to worker's one?  Then we don't need to edit
many files just to add new settings fields.

[Pan, 2014/03/06 08:50:56]

right, thanks！ Done.

+    OwnPtr<WorkerThreadStartupData> startupData = WorkerThreadStartupData::create(scriptURL, userAgent, sourceCode, startMode, document->contentSecurityPolicy()->deprecatedHeader(), document->contentSecurityPolicy()->deprecatedHeaderType(), m_workerClients.release(), settings.release());
     double originTime = document->loader() ? document->loader()->timing()->referenceMonotonicTime() : monotonicallyIncreasingTime();
 
     RefPtr<DedicatedWorkerThread> thread = DedicatedWorkerThread::create(*this, *m_workerObjectProxy.get(), originTime, startupData.release());
     workerThreadCreated(thread);
     thread->start();
     InspectorInstrumentation::didStartWorkerGlobalScope(m_executionContext.get(), this, scriptURL);
 }
 
 void WorkerMessagingProxy::postMessageToWorkerObject(PassRefPtr<SerializedScriptValue> message, PassOwnPtr<MessagePortChannelArray> channels)
 {
@@ skipping 172 matching lines @@
 {
     m_workerThreadHadPendingActivity = hasPendingActivity;
 }
 
 bool WorkerMessagingProxy::hasPendingActivity() const
 {
     return (m_unconfirmedMessageCount || m_workerThreadHadPendingActivity) && !m_askedToTerminate;
 }
 
 } // namespace WebCore