Move ScriptState::GetExecutionContext (Part 3)

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

Index: third_party/WebKit/Source/bindings/core/v8/V8MutationCallback.h
diff --git a/third_party/WebKit/Source/bindings/core/v8/V8MutationCallback.h b/third_party/WebKit/Source/bindings/core/v8/V8MutationCallback.h
index aa2581016ed039f5d68c1b13f77ee1f4b3f22622..eaf2e79694bdf69559eb7c734c99bf4c29be50a6 100644
--- a/third_party/WebKit/Source/bindings/core/v8/V8MutationCallback.h
+++ b/third_party/WebKit/Source/bindings/core/v8/V8MutationCallback.h
@@ -29,6 +29,7 @@
 #include "bindings/core/v8/ScopedPersistent.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "bindings/core/v8/TraceWrapperV8Reference.h"
+#include "core/dom/ExecutionContext.h"
 #include "core/dom/MutationCallback.h"
 #include "platform/wtf/RefPtr.h"
 #include "v8/include/v8.h"
@@ -50,7 +51,7 @@ class V8MutationCallback final : public MutationCallback {
             MutationObserver*) override;
 
   ExecutionContext* GetExecutionContext() const override {
-    return script_state_->GetExecutionContext();
+    return ExecutionContext::From(script_state_.Get());
   }
 
   DECLARE_VIRTUAL_TRACE();