First version of PerformanceObserver

Source/core/timing/PerformanceEntry.cpp

 /*
  * Copyright (C) 2012 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 23 matching lines @@
 #include "bindings/core/v8/ScriptValue.h"
 #include "bindings/core/v8/V8ObjectBuilder.h"
 
 namespace blink {
 
 PerformanceEntry::PerformanceEntry(const String& name, const String& entryType, double startTime, double finishTime)
     : m_name(name)
     , m_entryType(entryType)
     , m_startTime(startTime)
     , m_duration(finishTime - startTime)
+    , m_entryTypeEnum(toEntryTypeEnum(entryType))
 {
 }
 
 PerformanceEntry::~PerformanceEntry()
 {
 }
 
 String PerformanceEntry::name() const
 {
     return m_name;
 }
 
 String PerformanceEntry::entryType() const
 {
     return m_entryType;
 }
 
 double PerformanceEntry::startTime() const
 {
     return m_startTime;
 }
 
 double PerformanceEntry::duration() const
 {
     return m_duration;
 }
 
+PerformanceEntry::EntryType PerformanceEntry::toEntryTypeEnum(const String& entryType)
+{
+    if (equalIgnoringCase(entryType, "composite"))
+        return Composite;
+    if (equalIgnoringCase(entryType, "mark"))
+        return Mark;
+    if (equalIgnoringCase(entryType, "measure"))
+        return Measure;
+    if (equalIgnoringCase(entryType, "render"))
+        return Render;
+    if (equalIgnoringCase(entryType, "resource"))
+        return Resource;

[esprehn, 2015/07/24 08:23:12]

This is fine for now, but we'd probably use a sorted array and std::lower_bound
to be faster in the future.

+    return Invalid;
+}
+
 ScriptValue PerformanceEntry::toJSONForBinding(ScriptState* scriptState) const
 {
     V8ObjectBuilder result(scriptState);
     result.addString("name", name());
     result.addString("entryType", entryType());
     result.addNumber("startTime", startTime());
     result.addNumber("duration", duration());
     return result.scriptValue();
 }
 
 } // namespace blink