Support performance.now() in workers.

Source/modules/performance/WorkerContextPerformance.cpp

 /*
  * Copyright (C) 2013 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 11 matching lines @@
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
-#include "modules/crypto/DOMWindowCrypto.h"
 
-#include "core/page/DOMWindow.h"
-#include "core/page/Frame.h"
-#include "modules/crypto/Crypto.h"
+#include "modules/performance/WorkerContextPerformance.h"
+
+#include "core/dom/ScriptExecutionContext.h"
+#include "core/workers/WorkerContext.h"
+#include "modules/performance/WorkerPerformance.h"
 
 namespace WebCore {
 
-DOMWindowCrypto::DOMWindowCrypto(DOMWindow* window)
-    : DOMWindowProperty(window->frame())
+WorkerContextPerformance::WorkerContextPerformance()

[levin, 2013/06/13 19:55:22]

How is it deleted?

[abarth-chromium, 2013/06/13 20:18:19]

class WorkerContextPerformance : public Supplement<ScriptExecutionContext>

That means the object is owned by the ScriptExecutionContext.  When the
ScriptExecutionContext destructs, it deletes this object.

[levin, 2013/06/13 22:19:08]

I was looking for a destructor on Supplement and I missed that it has a HashMap
of OwnPtr.

 {
 }
 
-DOMWindowCrypto::~DOMWindowCrypto()
+WorkerContextPerformance::~WorkerContextPerformance()
 {
 }
 
-const char* DOMWindowCrypto::supplementName()
+const char* WorkerContextPerformance::supplementName()
 {
-    return "DOMWindowCrypto";
+    return "WorkerContextPerformance";
 }
 
-// static
-DOMWindowCrypto* DOMWindowCrypto::from(DOMWindow* window)
+WorkerContextPerformance* WorkerContextPerformance::from(ScriptExecutionContext* context)
 {
-    DOMWindowCrypto* supplement = static_cast<DOMWindowCrypto*>(Supplement<DOMWindow>::from(window, supplementName()));
+    WorkerContextPerformance* supplement = static_cast<WorkerContextPerformance*>(Supplement<ScriptExecutionContext>::from(context, supplementName()));
     if (!supplement) {
-        supplement = new DOMWindowCrypto(window);
-        provideTo(window, supplementName(), adoptPtr(supplement));
+        supplement = new WorkerContextPerformance();
+        provideTo(context, supplementName(), adoptPtr(supplement));
     }
     return supplement;
 }
 
-// static
-Crypto* DOMWindowCrypto::crypto(DOMWindow* window)
+WorkerPerformance* WorkerContextPerformance::performance(ScriptExecutionContext* context)
 {
-    return DOMWindowCrypto::from(window)->crypto();
+    return from(context)->getPerformance(context);
 }
 
-Crypto* DOMWindowCrypto::crypto() const
+WorkerPerformance* WorkerContextPerformance::getPerformance(ScriptExecutionContext* context)
 {
-    if (!m_crypto && frame())
-        m_crypto = Crypto::create();
-    return m_crypto.get();
+    if (!m_performance)
+        m_performance = WorkerPerformance::create(context);
+    return m_performance.get();
 }
 
 } // namespace WebCore