Roll 50: Copied IDLs, PYTHON scripts from WebKit removed deleted files in WebCore

modules/mediacapturefromelement/HTMLMediaElementCapture.idl

Index: modules/mediacapturefromelement/HTMLMediaElementCapture.idl
diff --git a/modules/mediacapturefromelement/HTMLMediaElementCapture.idl b/modules/mediacapturefromelement/HTMLMediaElementCapture.idl
new file mode 100644
index 0000000000000000000000000000000000000000..059f3d1dc8ddec21771709e164ed36cfa10386f0
--- /dev/null
+++ b/modules/mediacapturefromelement/HTMLMediaElementCapture.idl
@@ -0,0 +1,12 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// https://w3c.github.io/mediacapture-fromelement/#html-media-element-media-capture-extensions
+
+[
+    RuntimeEnabled=MediaCaptureFromVideo
+] partial interface HTMLMediaElement {
+    [RaisesException] MediaStream captureStream();
+    // TODO(mcasas): Implement captureStreamUntilEnded() http://crbug.com/575495.
+};