chore(expectedConditions): update generic Function typings

- Use `() => Promise<boolean>` over `Function` typings.
- Fix an ExpectedConditions test where it was set to a const.
- Fix a TypeScript typing interface issue with RunResults in taskRunner.
- Fix a browser call to use waitForAngularEnabled method over the
private variable.

Author: cnishina

lib/expectedConditions.ts

@@ -284,7 +284,11 @@ export class ProtractorExpectedConditions {
     return async(): Promise<boolean> => {
       const actualTitle = await this.browser.driver.getTitle();
       return actualTitle === title;
+<<<<<<< HEAD
     };
+=======
+    }
+>>>>>>> chore(expectedConditions): update generic Function typings
   }
 
   /**