HTML Media Capture: update capture attribute to use string.

third_party/WebKit/public/web/WebFileChooserParams.h

 /*
  * Copyright (C) 2010, 2011 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 45 matching lines @@
   // This list comes from an 'accept' attribute value of an INPUT element, and
   // it contains only lower-cased MIME type strings and file extensions.
   WebVector<WebString> accept_types;
   // |selectedFiles| has filenames which a file upload control already selected.
   // A WebViewClient implementation may ask a user to select
   //  - removing a file from the selected files,
   //  - appending other files, or
   //  - replacing with other files
   // before opening a file chooser dialog.
   WebVector<WebString> selected_files;
-  // See http://www.w3.org/TR/html-media-capture/ for the semantics of the
-  // capture attribute. If |useMediaCapture| is true, the media types
-  // indicated in |acceptTypes| should be obtained from the device's
-  // environment using a media capture mechanism. |capture| is deprecated and
-  // provided for compatibility reasons.
+  // https://w3c.github.io/html-media-capture/#dom-htmlinputelement-capture.
   WebString capture;
-  bool use_media_capture;
   // Whether WebFileChooserCompletion needs local paths or not. If the result
   // of file chooser is handled by the implementation of
   // WebFileChooserCompletion that can handle files without local paths,
   // 'false' should be specified to the flag.
   bool need_local_path;
   // If non-empty, represents the URL of the requestor if the request was
   // initiated by a document.
   WebURL requestor;
 
   WebFileChooserParams()
       : multi_select(false),
         directory(false),
         save_as(false),
-        use_media_capture(false),
         need_local_path(true) {}
 };
 
 }  // namespace blink
 
 #endif