Added partial unit tests for host_controller.js. More to come.

remoting/webapp/js_proto/sinon_proto.js

Index: remoting/webapp/js_proto/sinon_proto.js
diff --git a/remoting/webapp/js_proto/sinon_proto.js b/remoting/webapp/js_proto/sinon_proto.js
index c0aac4c8c45d4d3499a1c1df872d1fbf2688d31b..827d38d15592cf8d00f3ef46e99d09bd715b3091 100644
--- a/remoting/webapp/js_proto/sinon_proto.js
+++ b/remoting/webapp/js_proto/sinon_proto.js
@@ -61,6 +61,11 @@ sinon.Mock = function() {};
  */
 sinon.Mock.prototype.expects = function(method) {};
 
+/**
+ * @return {void}
+ */
+sinon.Mock.prototype.restore = function() {};
+
 /** @type {function(...):Function} */
 sinon.spy = function() {};
 
@@ -103,12 +108,12 @@ sinon.Spy.prototype.restore = function() {};
 sinon.Spy.prototype.args;
 
 /**
- * @param {Object} obj
- * @param {string} method
+ * @param {Object=} opt_obj
+ * @param {string=} opt_method
  * @param {Function=} opt_stubFunction
  * @return {sinon.TestStub}
  */
-sinon.stub = function(obj, method, opt_stubFunction) {};
+sinon.stub = function(opt_obj, opt_method, opt_stubFunction) {};
 
 /**
  * TODO(jrw): rename to |sinon.Stub| for consistency
@@ -131,6 +136,9 @@ sinon.TestStub.prototype.withArgs = function() {};
 /** @type {function(...):sinon.Expectation} */
 sinon.TestStub.prototype.onFirstCall = function() {};
 
+/** @type {function(...):sinon.Expectation} */
+sinon.TestStub.prototype.callsArgWith = function() {};
+
 /** @returns {Object}  */
 sinon.createStubInstance = function (/** * */ constructor) {};