Add serializers for window.performance.

third_party/WebKit/Source/core/timing/Performance.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2012 Intel 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.
@@ skipping 13 matching lines @@
  * 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 "core/timing/Performance.h"
 
+#include "bindings/core/v8/ScriptValue.h"
+#include "bindings/core/v8/V8ObjectBuilder.h"
 #include "core/dom/Document.h"
 #include "core/frame/LocalFrame.h"
 #include "core/inspector/InspectedFrames.h"
 #include "core/inspector/InspectorWebPerfAgent.h"
 #include "core/loader/DocumentLoader.h"
 #include "core/origin_trials/OriginTrials.h"
 #include "core/timing/PerformanceTiming.h"
 
 namespace blink {
 
@@ skipping 48 matching lines @@
       return;
     m_longTaskInspectorAgent = new InspectorWebPerfAgent(frame());
     m_longTaskInspectorAgent->enable();
   } else if (!hasObserverFor(PerformanceEntry::LongTask) &&
              m_longTaskInspectorAgent) {
     m_longTaskInspectorAgent->disable();
     m_longTaskInspectorAgent = nullptr;
   }
 }
 
+ScriptValue Performance::toJSONForBinding(ScriptState* scriptState) const {
+  V8ObjectBuilder result(scriptState);
+  result.add("timing", timing()->toJSONForBinding(scriptState));
+  result.add("navigation", navigation()->toJSONForBinding(scriptState));
+  return result.scriptValue();
+}
+
 DEFINE_TRACE(Performance) {
   visitor->trace(m_navigation);
   visitor->trace(m_timing);
   visitor->trace(m_longTaskInspectorAgent);
   DOMWindowProperty::trace(visitor);
   PerformanceBase::trace(visitor);
 }
 
 }  // namespace blink