Add serializers for window.performance.

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

 /*
  * Copyright (C) 2010 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 12 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/MemoryInfo.h"
 
+#include "bindings/core/v8/ScriptValue.h"
+#include "bindings/core/v8/V8ObjectBuilder.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/Settings.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "wtf/CurrentTime.h"
 #include "wtf/MathExtras.h"
 #include "wtf/ThreadSpecific.h"
 #include <limits>
 #include <v8.h>
 
 namespace blink {
@@ skipping 95 matching lines @@
   }
 
   for (int i = 0; i < numberOfBuckets; ++i) {
     if (size <= bucketSizeList[i])
       return bucketSizeList[i];
   }
 
   return bucketSizeList[numberOfBuckets - 1];
 }
 
+ScriptValue MemoryInfo::toJSONForBinding(ScriptState* scriptState) const {
+  V8ObjectBuilder result(scriptState);
+  result.addNumber("totalJSHeapSize", totalJSHeapSize());
+  result.addNumber("usedJSHeapSize", usedJSHeapSize());
+  result.addNumber("jsHeapSizeLimit", jsHeapSizeLimit());
+  return result.scriptValue();
+}
+
 MemoryInfo::MemoryInfo() {
   if (RuntimeEnabledFeatures::preciseMemoryInfoEnabled())
     getHeapSize(m_info);
   else
     HeapSizeCache::forCurrentThread().getCachedHeapSize(m_info);
 }
 
 }  // namespace blink