Mojo JS bindings: switch most usage of "connection"/"router" module to "bindings".

third_party/WebKit/LayoutTests/shapedetection/resources/mock-facedetection.js

 "use strict";
 
 let mockFaceDetectionProviderReady = define(
   'mockFaceDetectionProvider',
   ['third_party/WebKit/public/platform/modules/shapedetection/facedetection.mojom',
    'third_party/WebKit/public/platform/modules/shapedetection/facedetection_provider.mojom',
    'mojo/public/js/bindings',
-   'mojo/public/js/connection',
    'mojo/public/js/core',
    'content/public/renderer/frame_interfaces',
-  ], (faceDetection, faceDetectionProvider, bindings, connection, mojo, interfaces) => {
+  ], (faceDetection, faceDetectionProvider, bindings, mojo, interfaces) => {
 
   class MockFaceDetectionProvider {
     constructor() {
+      this.bindingSet_ = new bindings.BindingSet(
+          faceDetectionProvider.FaceDetectionProvider);
+
       interfaces.addInterfaceOverrideForTesting(
           faceDetectionProvider.FaceDetectionProvider.name,
-          pipe => this.bindToPipe(pipe));
-    }
-
-    bindToPipe(pipe) {
-      this.stub_ = connection.bindHandleToStub(
-          pipe, faceDetectionProvider.FaceDetectionProvider);
-      bindings.StubBindings(this.stub_).delegate = this;
+          handle => this.bindingSet_.addBinding(this, handle));
     }
 
     createFaceDetection(request, options) {
-      this.mock_service_ = new MockFaceDetection(options);
-      this.mock_service_.stub_ = connection.bindHandleToStub(
-          request.handle, faceDetection.FaceDetection);
-      bindings.StubBindings(this.mock_service_.stub_).delegate =
-          this.mock_service_;
+      this.mock_service_ = new MockFaceDetection(request, options);
     }
 
     getFrameData() {
       return this.mock_service_.buffer_data_;
     }
 
     getMaxDetectedFaces() {
      return this.mock_service_.maxDetectedFaces_;
     }
 
     getFastMode () {
       return this.mock_service_.fastMode_;
     }
   }
 
   class MockFaceDetection {
-    constructor(options) {
+    constructor(request, options) {
       this.maxDetectedFaces_ = options.max_detected_faces;
       this.fastMode_ = options.fast_mode;
+      this.binding_ = new bindings.Binding(faceDetection.FaceDetection, this,
+                                           request);
     }
 
     detect(frame_data, width, height) {
       let receivedStruct = mojo.mapBuffer(frame_data, 0, width*height*4, 0);
       this.buffer_data_ = new Uint32Array(receivedStruct.buffer);
       return Promise.resolve({
         result: {
           bounding_boxes: [
               { x : 1.0, y: 1.0, width: 100.0, height: 100.0 },
               { x : 2.0, y: 2.0, width: 200.0, height: 200.0 },
               { x : 3.0, y: 3.0, width: 300.0, height: 300.0 },
           ]
         }
       });
       mojo.unmapBuffer(receivedStruct.buffer);
     }
   }
   return new MockFaceDetectionProvider();
 });