update API golds

Author: mmalerba

tools/public_api_guard/cdk/testing/protractor.d.ts

@@ -3,7 +3,7 @@ export declare class ProtractorElement implements TestElement {
     constructor(element: ElementFinder);
     blur(): Promise<void>;
     clear(): Promise<void>;
-    click(...args: ['center'] | [number, number]): Promise<void>;
+    click(...args: [location: 'center'] | [relativeX: number, relativeY: number]): Promise<void>;
     focus(): Promise<void>;
     getAttribute(name: string): Promise<string | null>;
     getCssValue(property: string): Promise<string>;

tools/public_api_guard/cdk/testing/testbed.d.ts

@@ -20,7 +20,7 @@ export declare class UnitTestElement implements TestElement {
     constructor(element: Element, _stabilize: () => Promise<void>);
     blur(): Promise<void>;
     clear(): Promise<void>;
-    click(...args: ['center'] | [number, number]): Promise<void>;
+    click(...args: [location: 'center'] | [relativeX: number, relativeY: number]): Promise<void>;
     focus(): Promise<void>;
     getAttribute(name: string): Promise<string | null>;
     getCssValue(property: string): Promise<string>;