Reduce ActiveDOMObjects from core/

third_party/WebKit/Source/core/fileapi/FileReader.cpp

Index: third_party/WebKit/Source/core/fileapi/FileReader.cpp
diff --git a/third_party/WebKit/Source/core/fileapi/FileReader.cpp b/third_party/WebKit/Source/core/fileapi/FileReader.cpp
index c4ad7b6ea34eeaf00e94bc9863d18db8ecc3d4d1..b654c90a608f498e3a9e91a6ef20ea5678c97c4a 100644
--- a/third_party/WebKit/Source/core/fileapi/FileReader.cpp
+++ b/third_party/WebKit/Source/core/fileapi/FileReader.cpp
@@ -196,13 +196,11 @@ private:
 
 FileReader* FileReader::create(ExecutionContext* context)
 {
-    FileReader* fileReader = new FileReader(context);
-    fileReader->suspendIfNeeded();
-    return fileReader;
+    return new FileReader(context);
 }
 
 FileReader::FileReader(ExecutionContext* context)
-    : ActiveDOMObject(context)
+    : ContextLifecycleObserver(context)
     , m_state(EMPTY)
     , m_loadingState(LoadingStateNone)
     , m_readType(FileReaderLoader::ReadAsBinaryString)
@@ -221,7 +219,7 @@ const AtomicString& FileReader::interfaceName() const
     return EventTargetNames::FileReader;
 }
 
-void FileReader::stop()
+void FileReader::contextDestroyed()
 {
     // The delayed abort task tidies up and advances to the DONE state.
     if (m_loadingState == LoadingStateAborted)
@@ -471,7 +469,7 @@ DEFINE_TRACE(FileReader)
 {
     visitor->trace(m_error);
     RefCountedGarbageCollectedEventTargetWithInlineData<FileReader>::trace(visitor);
-    ActiveDOMObject::trace(visitor);
+    ContextLifecycleObserver::trace(visitor);
 }
 
 } // namespace blink