Add kForceWithoutContextObserver parameter to vibration_manager_

This is to ensure vibration/vibration-iframe.html passes with another
CL: https://crrev.com/c/2352292
The test should hook disconnect handler in js and make it sure that
vibration stops, but it is not supported yet.

Bug: 1115894, 1100257
Change-Id: Ia4934d4a4537f04bc8f43550c83c8f003c4b7683
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2355638
Commit-Queue: Yuki Yamada <yukiy@chromium.org>
Reviewed-by: Minoru Chikamune <chikamune@chromium.org>
Reviewed-by: Keishi Hattori <keishi@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#798573}

third_party/blink/renderer/modules/vibration/vibration_controller.cc

@@ -181,6 +181,11 @@ void VibrationController::DidCancel() {
 
 void VibrationController::ContextDestroyed() {
   Cancel();
+
+  // If the document context was destroyed, never call the mojo service again.
+  // TODO(crbug.com/1116948): Remove this line once vibration_manager_ switches
+  // to kForceWithContextObserver.
+  vibration_manager_.reset();
 }
 
 void VibrationController::PageVisibilityChanged() {

third_party/blink/renderer/modules/vibration/vibration_controller.h

@@ -74,7 +74,14 @@ class MODULES_EXPORT VibrationController final
 
   // Remote to VibrationManager mojo interface. This is reset in
   // |contextDestroyed| and must not be called or recreated after it is reset.
-  HeapMojoRemote<device::mojom::blink::VibrationManager> vibration_manager_;
+  //
+  // TODO(crbug.com/1116948): Remove kForceWithoutContextObserver parameter
+  // after hooking disconnect handler in js is implemented in
+  // MojoInterfaceInterceptor.
+  // See: third_party/blink/web_tests/vibration/vibration-iframe.html
+  HeapMojoRemote<device::mojom::blink::VibrationManager,
+                 HeapMojoWrapperMode::kForceWithoutContextObserver>
+      vibration_manager_;
 
   // Timer for calling |doVibrate| after a delay. It is safe to call
   // |startOneshot| when the timer is already running: it may affect the time