address comments

Author: mmalerba

src/cdk/testing/protractor/protractor-element.ts

@@ -80,11 +80,12 @@ export class ProtractorElement implements TestElement {
     return this.element.clear();
   }
 
-  async click(...args: ['center'] | [number, number]): Promise<void> {
+  async click(...args: [location: 'center'] | [relativeX: number, relativeY: number]):
+      Promise<void> {
     // Omitting the offset argument to mouseMove results in clicking the center.
     // This is the default behavior we want, so we use an empty array of offsetArgs if no args are
     // passed to this method.
-    const offsetArgs = args.length == 2 ? [{x: args[0], y: args[1]}] : [];
+    const offsetArgs = args.length === 2 ? [{x: args[0], y: args[1]}] : [];
 
     await browser.actions()
       .mouseMove(await this.element.getWebElement(), ...offsetArgs)

src/cdk/testing/testbed/unit-test-element.ts

@@ -78,7 +78,8 @@ export class UnitTestElement implements TestElement {
     await this._stabilize();
   }
 
-  async click(...args: ['center'] | [number, number]): Promise<void> {
+  async click(...args: [location: 'center'] | [relativeX: number, relativeY: number]):
+      Promise<void> {
     let clientX: number | undefined = undefined;
     let clientY: number | undefined = undefined;
     if (args.length) {