Move ScriptState::GetExecutionContext (Part 4)

third_party/WebKit/Source/core/streams/UnderlyingSourceBase.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UnderlyingSourceBase_h
 #define UnderlyingSourceBase_h
 
 #include "bindings/core/v8/ActiveScriptWrappable.h"
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "bindings/core/v8/ScriptValue.h"
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "core/CoreExport.h"
 #include "core/dom/ContextLifecycleObserver.h"
+#include "core/dom/ExecutionContext.h"
 #include "platform/heap/GarbageCollected.h"
 #include "platform/heap/Handle.h"
 
 namespace blink {
 
 class ReadableStreamController;
 
 class CORE_EXPORT UnderlyingSourceBase
     : public GarbageCollectedFinalized<UnderlyingSourceBase>,
       public ScriptWrappable,
@@ skipping 18 matching lines @@
   void notifyLockReleased();
 
   // ScriptWrappable
   bool HasPendingActivity() const;
 
   // ContextLifecycleObserver
   void ContextDestroyed(ExecutionContext*) override;
 
  protected:
   explicit UnderlyingSourceBase(ScriptState* script_state)
-      : ContextLifecycleObserver(script_state->GetExecutionContext()) {}
+      : ContextLifecycleObserver(ExecutionContext::From(script_state)) {}
 
   ReadableStreamController* Controller() const { return controller_; }
 
  private:
   Member<ReadableStreamController> controller_;
   bool is_stream_locked_ = false;
 };
 
 }  // namespace blink
 
 #endif  // UnderlyingSourceBase_h