Make AttachBehavior a required argument.

Source/core/html/shadow/PasswordGeneratorButtonElement.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 72 matching lines @@
 
 void PasswordGeneratorButtonElement::decorate(HTMLInputElement* input)
 {
     ASSERT(input);
     ShadowRoot* existingRoot;
     ShadowRoot* decorationRoot;
     getDecorationRootAndDecoratedRoot(input, decorationRoot, existingRoot);
     ASSERT(decorationRoot);
     ASSERT(existingRoot);
     RefPtr<HTMLDivElement> box = HTMLDivElement::create(input->document());
-    decorationRoot->appendChild(box);
+    decorationRoot->appendChild(box, ASSERT_NO_EXCEPTION, DeprecatedAttachNow);
     box->setInlineStyleProperty(CSSPropertyDisplay, CSSValueFlex);
     box->setInlineStyleProperty(CSSPropertyAlignItems, CSSValueCenter);
     ASSERT(existingRoot->childNodeCount() == 1);
     toHTMLElement(existingRoot->firstChild())->setInlineStyleProperty(CSSPropertyFlexGrow, 1.0, CSSPrimitiveValue::CSS_NUMBER);
-    box->appendChild(HTMLShadowElement::create(HTMLNames::shadowTag, input->document()));
+    box->appendChild(HTMLShadowElement::create(HTMLNames::shadowTag, input->document()), ASSERT_NO_EXCEPTION, DeprecatedAttachNow);
     setInlineStyleProperty(CSSPropertyDisplay, CSSValueNone);
-    box->appendChild(this);
+    box->appendChild(this, ASSERT_NO_EXCEPTION, DeprecatedAttachNow);
 }
 
 inline HTMLInputElement* PasswordGeneratorButtonElement::hostInput()
 {
     // PasswordGeneratorButtonElement is created only by C++ code, and it is always
     // in <input> shadow.
     return toHTMLInputElement(shadowHost());
 }
 
 void PasswordGeneratorButtonElement::updateImage()
@@ skipping 91 matching lines @@
 bool PasswordGeneratorButtonElement::willRespondToMouseClickEvents()
 {
     const HTMLInputElement* input = hostInput();
     if (!input->isDisabledOrReadOnly())
         return true;
 
     return HTMLDivElement::willRespondToMouseClickEvents();
 }
 
 } // namespace WebCore