Fix MediaSource renderer to limit memory consumption.

remoting/webapp/js_proto/dom_proto.js

Index: remoting/webapp/js_proto/dom_proto.js
diff --git a/remoting/webapp/js_proto/dom_proto.js b/remoting/webapp/js_proto/dom_proto.js
index 1e392cb5593d29e43c0c6cc19c554f004b668841..1877b505b69ddb495c4515fe31a31bc63883a788 100644
--- a/remoting/webapp/js_proto/dom_proto.js
+++ b/remoting/webapp/js_proto/dom_proto.js
@@ -151,12 +151,21 @@ var SourceBuffer = function() {}
 /** @type {boolean} */
 SourceBuffer.prototype.updating;
 
+/** @type {TimeRanges} */
+SourceBuffer.prototype.buffered;
+
 /**
  * @param {ArrayBuffer} buffer
  */
 SourceBuffer.prototype.appendBuffer = function(buffer) {}
 
 /**
+ * @param {number} start
+ * @param {number} end
+ */
+SourceBuffer.prototype.remove = function(start, end) {}
+
+/**
  * @constructor
  * @extends {EventTargetStub}
  */