Use EphemeralRange to construct StaticRange

third_party/WebKit/Source/core/editing/EditingUtilities.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 2069 matching lines @@
   return isHTMLInputElement(textControl) &&
          toHTMLInputElement(textControl)->type() == InputTypeNames::password;
 }
 
 bool isTextSecurityNode(const Node* node) {
   return node && node->layoutObject() &&
          node->layoutObject()->style()->textSecurity() != TSNONE;
 }
 
 const StaticRangeVector* targetRangesForInputEvent(const Node& node) {
+  // TODO(xiaochengh): The use of updateStyleAndLayoutIgnorePendingStylesheets
+  // needs to be audited. see http://crbug.com/590369 for more details.
+  node.document().updateStyleAndLayoutIgnorePendingStylesheets();
   if (!hasRichlyEditableStyle(node))
     return nullptr;
-  Range* range = createRange(
+  EphemeralRange range =

[yosin_UTC9, 2017/03/08 07:35:51]

nit: s/EphmeralRange/const EphemeralRange&/
to avoid copy.

[chongz, 2017/03/08 18:31:09]

Done.

       firstEphemeralRangeOf(node.document()
                                 .frame()
                                 ->selection()
-                                .computeVisibleSelectionInDOMTreeDeprecated()));
-  if (!range)
+                                .computeVisibleSelectionInDOMTreeDeprecated());
+  if (range.isNull())
     return nullptr;
   return new StaticRangeVector(1, StaticRange::create(range));
 }
 
 DispatchEventResult dispatchBeforeInputInsertText(Node* target,
                                                   const String& data) {
   if (!RuntimeEnabledFeatures::inputEventEnabled())
     return DispatchEventResult::NotCanceled;
   if (!target)
     return DispatchEventResult::NotCanceled;
@@ skipping 71 matching lines @@
         return InputType::DeleteWordBackward;
       if (granularity == LineBoundary)
         return InputType::DeleteLineBackward;
       return InputType::DeleteContentBackward;
     default:
       return InputType::None;
   }
 }
 
 }  // namespace blink