Extracting placeholder information from Webkit to Blimp

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

 /*
  * Copyright (C) 2006, 2007, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  *
  * 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
@@ skipping 949 matching lines @@
   frame().document()->updateStyleAndLayoutIgnorePendingStylesheets();
 
   DocumentLifecycle::DisallowTransitionScope disallowTransition(
       frame().document()->lifecycle());
 
   // Emits an object replacement character for each replaced element so that
   // it is exposed to IME and thus could be deleted by IME on android.
   info.value = plainText(EphemeralRange::rangeOfContents(*element),
                          TextIteratorEmitsObjectReplacementCharacter);
 
+  element = frame().document()->focusedElement();

[David Trainor- moved to gerrit, 2016/10/26 01:36:42]

This still has the problem of being in the common path for typical text entry
right?  I think once we add label we don't want to add any extra work here.  Is
there a way to pull out these attributes that doesn't go through this code path?

Also will this work for non-text input fields (for label in the future)?

+  info.placeholder = element->fastGetAttribute(HTMLNames::placeholderAttr);
+
   if (info.value.isEmpty())
     return info;
 
   EphemeralRange firstRange =
       firstEphemeralRangeOf(frame().selection().selection());
   if (firstRange.isNotNull()) {
     PlainTextRange plainTextRange(PlainTextRange::create(*element, firstRange));
     if (plainTextRange.isNotNull()) {
       info.selectionStart = plainTextRange.start();
       info.selectionEnd = plainTextRange.end();
@@ skipping 149 matching lines @@
 
   return WebTextInputTypeNone;
 }
 
 DEFINE_TRACE(InputMethodController) {
   visitor->trace(m_frame);
   visitor->trace(m_compositionRange);
 }
 
 }  // namespace blink