Remove Sync GetPose VRService call, implement VRVSyncProvider

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

Index: third_party/WebKit/LayoutTests/vr/resources/mock-vr-service.js
diff --git a/third_party/WebKit/LayoutTests/vr/resources/mock-vr-service.js b/third_party/WebKit/LayoutTests/vr/resources/mock-vr-service.js
index fc1be18ee226c0c0cb09d805fc159d622880a003..d40e9e4800fb2b085047b17b718c7d6e1ecbdc10 100644
--- a/third_party/WebKit/LayoutTests/vr/resources/mock-vr-service.js
+++ b/third_party/WebKit/LayoutTests/vr/resources/mock-vr-service.js
@@ -13,6 +13,7 @@ let mockVRService = loadMojoModules(
       this.displayClient_ = new vr_service.VRDisplayClientPtr();
       this.displayInfo_ = displayInfo;
       this.service_ = service;
+      this.vsync_provider_ = new MockVRVSyncProvider();
 
       interfaceProvider.addInterfaceOverrideForTesting(
           vr_service.VRDisplay.name,
@@ -27,6 +28,8 @@ let mockVRService = loadMojoModules(
       return Promise.resolve({success: true});
     }
 
+    getVRVSyncProvider(request) { this.vsync_provider_.bind(request); }
+
     forceActivate(reason) {
       this.displayClient_.onActivate(reason);
     }
@@ -43,6 +46,26 @@ let mockVRService = loadMojoModules(
     }
   }
 
+  class MockVRVSyncProvider {
+    constructor() {
+      this.timeDelta_ = 0;
+      this.binding_ = new bindings.Binding(vr_service.VRVSyncProvider, this);
+    }
+    bind(request) {
+      this.binding_.close();
+      this.binding_.bind(request);
+    }
+    getVSync() {
+      this.timeDelta_ += 1000.0 / 60.0;
+      return Promise.resolve({
+        pose: null,
+        time: {
+          microseconds: this.timeDelta_,
+        },
+      });
+    }
+  }
+
   class MockVRService {
     constructor(interfaceProvider) {
       this.bindingSet_ = new bindings.BindingSet(vr_service.VRService);