Handle JS-created files in <input type="file">.

Source/core/html/forms/FileInputType.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 71 matching lines @@
     return InputTypeNames::file;
 }
 
 FormControlState FileInputType::saveFormControlState() const
 {
     if (m_fileList->isEmpty())
         return FormControlState();
     FormControlState state;
     unsigned numFiles = m_fileList->length();
     for (unsigned i = 0; i < numFiles; ++i) {
-        state.append(m_fileList->item(i)->path());
-        state.append(m_fileList->item(i)->name());
+        if (m_fileList->item(i)->hasBackingFile()) {
+            state.append(m_fileList->item(i)->path());
+            state.append(m_fileList->item(i)->name());
+        }
+        // FIXME: handle Blob-backed File instances, see http://crbug.com/394948
     }
     return state;
 }
 
 void FileInputType::restoreFormControlState(const FormControlState& state)
 {
     if (state.valueSize() % 2)
         return;
     filesChosen(filesFromFormControlState(state));
 }
@@ skipping 45 matching lines @@
     if (!UserGestureIndicator::processingUserGesture())
         return;
 
     if (Chrome* chrome = this->chrome()) {
         FileChooserSettings settings;
         HTMLInputElement& input = element();
         settings.allowsDirectoryUpload = input.fastHasAttribute(webkitdirectoryAttr);
         settings.allowsMultipleFiles = settings.allowsDirectoryUpload || input.fastHasAttribute(multipleAttr);
         settings.acceptMIMETypes = input.acceptMIMETypes();
         settings.acceptFileExtensions = input.acceptFileExtensions();
-        settings.selectedFiles = m_fileList->paths();
+        settings.selectedFiles = m_fileList->pathsForUserVisibleFiles();
         settings.useMediaCapture = RuntimeEnabledFeatures::mediaCaptureEnabled() && input.isFileUpload() && input.fastHasAttribute(captureAttr);
         chrome->runOpenPanel(input.document().frame(), newFileChooser(settings));
     }
     event->setDefaultHandled();
 }
 
 RenderObject* FileInputType::createRenderer(RenderStyle*) const
 {
     return new RenderFileUploadControl(&element());
 }
@@ skipping 205 matching lines @@
     StringBuilder names;
     for (size_t i = 0; i < listSize; ++i) {
         names.append(fileList->item(i)->name());
         if (i != listSize - 1)
             names.append('\n');
     }
     return names.toString();
 }
 
 } // namespace blink