Move ScriptState::GetExecutionContext (Part 3)

third_party/WebKit/Source/bindings/core/v8/V8MutationCallback.cpp

Index: third_party/WebKit/Source/bindings/core/v8/V8MutationCallback.cpp
diff --git a/third_party/WebKit/Source/bindings/core/v8/V8MutationCallback.cpp b/third_party/WebKit/Source/bindings/core/v8/V8MutationCallback.cpp
index d96facbcd0c70a6eefed8504a89e1b700607aae5..8b5ae6693535c8cce2233116fa6fa0e50a3d9500 100644
--- a/third_party/WebKit/Source/bindings/core/v8/V8MutationCallback.cpp
+++ b/third_party/WebKit/Source/bindings/core/v8/V8MutationCallback.cpp
@@ -51,7 +51,8 @@ void V8MutationCallback::Call(
     const HeapVector<Member<MutationRecord>>& mutations,
     MutationObserver* observer) {
   v8::Isolate* isolate = script_state_->GetIsolate();
-  ExecutionContext* execution_context = script_state_->GetExecutionContext();
+  ExecutionContext* execution_context =
+      ExecutionContext::From(script_state_.Get());
   if (!execution_context || execution_context->IsContextSuspended() ||
       execution_context->IsContextDestroyed())
     return;