Move ScriptState::GetExecutionContext (Part 4)

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

 // 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.
 
 #include "core/fileapi/URLFileAPI.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "core/dom/DOMURL.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/fileapi/Blob.h"
 #include "core/frame/UseCounter.h"
 #include "core/html/PublicURLManager.h"
 
 namespace blink {
 
 // static
 String URLFileAPI::createObjectURL(ScriptState* script_state,
                                    Blob* blob,
                                    ExceptionState& exception_state) {
   DCHECK(blob);
-  ExecutionContext* execution_context = script_state->GetExecutionContext();
+  ExecutionContext* execution_context = ExecutionContext::From(script_state);
   DCHECK(execution_context);
 
   if (blob->isClosed()) {
     // TODO(jsbell): The spec doesn't throw, but rather returns a blob: URL
     // without adding it to the store.
     exception_state.ThrowDOMException(
         kInvalidStateError,
         String(blob->IsFile() ? "File" : "Blob") + " has been closed.");
     return String();
   }
 
   UseCounter::Count(execution_context, UseCounter::kCreateObjectURLBlob);
   return DOMURL::CreatePublicURL(execution_context, blob, blob->Uuid());
 }
 
 // static
 void URLFileAPI::revokeObjectURL(ScriptState* script_state,
                                  const String& url_string) {
-  ExecutionContext* execution_context = script_state->GetExecutionContext();
+  ExecutionContext* execution_context = ExecutionContext::From(script_state);
   DCHECK(execution_context);
 
   KURL url(KURL(), url_string);
   execution_context->RemoveURLFromMemoryCache(url);
   execution_context->GetPublicURLManager().Revoke(url);
 }
 
 }  // namespace blink