[Presentation API] Move presentation.mojom to content/common/presentation

third_party/WebKit/LayoutTests/presentation/resources/presentation-service-mock.js

 /*
  * Mock implementation of mojo PresentationService.
  */
 
 "use strict";
 
 let presentationServiceMock = loadMojoModules(
     'presentationServiceMock',
     [
-      'third_party/WebKit/public/platform/modules/presentation/presentation.mojom',
+      'content/common/presentation/presentation.mojom',
       'mojo/public/js/bindings',
     ]).then(mojo => {
       let [ presentationService, bindings ] = mojo.modules;
 
       class PresentationServiceMock {
         constructor(interfaceProvider) {
           interfaceProvider.addInterfaceOverrideForTesting(
               presentationService.PresentationService.name,
               handle => this.bindingSet_.addBinding(this, handle));
           this.interfaceProvider_ = interfaceProvider;
@@ skipping 12 matching lines @@
         joinSession(urls) {
           return Promise.resolve({
               sessionInfo: { url: urls[0], id: 'fakeSessionId' },
               error: null,
           });
         }
       }
 
       return new PresentationServiceMock(mojo.frameInterfaces);
     });