Remove ExceptionState::throwIfNeeded

third_party/WebKit/Source/bindings/core/v8/ScriptCustomElementDefinition.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 "bindings/core/v8/ScriptCustomElementDefinition.h"
 
 #include "bindings/core/v8/ScriptState.h"
 #include "bindings/core/v8/V8Binding.h"
 #include "bindings/core/v8/V8BindingMacros.h"
 #include "bindings/core/v8/V8CustomElementsRegistry.h"
@@ skipping 175 matching lines @@
 
 HTMLElement* ScriptCustomElementDefinition::createElementSync(
     Document& document, const QualifiedName& tagName)
 {
     ScriptState::Scope scope(m_scriptState.get());
     v8::Isolate* isolate = m_scriptState->isolate();
 
     // When invoked from "create an element for a token":
     // https://html.spec.whatwg.org/multipage/syntax.html#create-an-element-for-the-token
 
+    // 7. If this step throws an exception, then report the exception, ...
+    v8::TryCatch tryCatch(isolate);
+    tryCatch.SetVerbose(true);
     ExceptionState exceptionState(ExceptionState::ConstructionContext,
         "CustomElement", constructor(), isolate);
     HTMLElement* element = createElementSync(document, tagName, exceptionState);
 
     if (exceptionState.hadException() || !element) {
-        // 7. If this step throws an exception, then report the exception, ...
-        {
-            v8::TryCatch tryCatch(isolate);
-            tryCatch.SetVerbose(true);
-            exceptionState.throwIfNeeded();
-        }
-
         // ...and let element be instead a new element that implements
         // HTMLUnknownElement, with no attributes, namespace set to given
         // namespace, namespace prefix set to null, custom element state
         // "undefined", and node document set to document.
         element = HTMLUnknownElement::create(tagName, document);
         element->setCustomElementState(CustomElementState::Undefined);
     }
     return element;
 }
 
@@ skipping 129 matching lines @@
         v8String(isolate, name.localName()),
         v8StringOrNull(isolate, oldValue),
         v8StringOrNull(isolate, newValue),
         v8String(isolate, name.namespaceURI()),
     };
     runCallback(m_attributeChangedCallback.newLocal(isolate), element,
         argc, argv);
 }
 
 } // namespace blink