Ability to specify android debug ui not only on OSX

Fixes #923

Author: Fatme Havaluova

lib/config.ts

@@ -10,7 +10,7 @@ export class Configuration extends configBaseLib.ConfigBase implements IConfigur
 	DEBUG = false;
 	TYPESCRIPT_COMPILER_OPTIONS = {};
 	USE_PROXY = false;
-	ANDROID_DEBUG_UI_MAC = "Google Chrome";
+	ANDROID_DEBUG_UI: string = null;
 
 	/*don't require logger and everything that has logger as dependency in config.js due to cyclic dependency*/
 	constructor(protected $fs: IFileSystem) {

lib/declarations.ts

@@ -35,7 +35,7 @@ interface IDependencyData {
 interface IStaticConfig extends Config.IStaticConfig { }
 
 interface IConfiguration extends Config.IConfig {
-	ANDROID_DEBUG_UI_MAC: string;
+	ANDROID_DEBUG_UI: string;
 }
 
 interface IApplicationPackage {

lib/services/android-debug-service.ts

@@ -170,12 +170,12 @@ class AndroidDebugService implements IDebugService {
     }
 
     private openDebuggerClient(url: string): void {
-		let chrome = this.$hostInfo.isDarwin ? this.$config.ANDROID_DEBUG_UI_MAC : "chrome";
-		let child = this.$opener.open(url, chrome);
+        let defaultDebugUI = this.$hostInfo.isDarwin ? "Google Chrome" : "chrome";
+		let debugUI = this.$config.ANDROID_DEBUG_UI || defaultDebugUI;
+		let child = this.$opener.open(url, debugUI);
 		if(!child) {
-			this.$errors.fail(`Unable to open ${chrome}.`);
+			this.$errors.failWithoutHelp(`Unable to open ${debugUI}.`);
 		}
-		return child;
     }
 
     private checkIfRunning(packageName: string): boolean {