Added support to force extension auto install.

static/js/services/chromeextension.js

@@ -95,10 +95,11 @@ define(["underscore", "jquery", "webrtc.adapter"], function(_, $) {
 			}
 		};
 
-		ChromeExtension.prototype.registerAutoInstall = function(installFunc, cancelInstallFunc) {
+		ChromeExtension.prototype.registerAutoInstall = function(installFunc, cancelInstallFunc, force) {
 
 			this.autoinstall.install = installFunc;
 			this.autoinstall.cancel = cancelInstallFunc;
+			this.autoinstall.force = !!force;
 			if (!this.available && installFunc) {
 				this.e.triggerHandler("available", true);
 			}

static/js/services/screensharing.js

@@ -67,6 +67,7 @@ define(['underscore', 'webrtc.adapter'], function(_) {
 				}
 
 				if (chromeExtension.available) {
+
 					this.supported = true;
 					var pending = null;
 					this.prepare = function(options) {
@@ -108,6 +109,14 @@ define(['underscore', 'webrtc.adapter'], function(_) {
 							pending = null;
 						}
 					};
+
+				} else {
+
+					// Check if we always should do autoinstall if the extension is not there.
+					if (chromeExtension.autoinstall.force) {
+						this.supported = false;
+					}
+
 				}
 
 			} else {