GetDeviceList Permission

Invoke GetDeviceList permission check rather than treat as it is always
granted to apps.

Bug: b/78231419
Test: Manual
Change-Id: I838c00fd2d87719c8e9e8d5c9194144a279c0eca
Reviewed-on: https://chromium-review.googlesource.com/1014602Reviewed-by: Luis Hector Chavez <lhchavez@chromium.org>
Commit-Queue: Long Cheng <lgcheng@google.com>
Cr-Commit-Position: refs/heads/master@{#553806}

components/arc/usb/usb_host_bridge.cc

@@ -118,6 +118,11 @@ void ArcUsbHostBridge::RequestPermission(const std::string& guid,
                                          const std::string& package,
                                          bool interactive,
                                          RequestPermissionCallback callback) {
+  if (guid.empty()) {
+    HandleScanDeviceListRequest(package, std::move(callback));
+    return;
+  }
+
   VLOG(2) << "USB RequestPermission " << guid << " package " << package;
   // Permission already requested.
   if (HasPermissionForDevice(guid, package)) {
@@ -317,4 +322,18 @@ bool ArcUsbHostBridge::HasPermissionForDevice(const std::string& guid,
       device->product_id());
 }
 
+void ArcUsbHostBridge::HandleScanDeviceListRequest(
+    const std::string& package,
+    RequestPermissionCallback callback) {
+  if (!ui_delegate_) {
+    std::move(callback).Run(false);
+    return;
+  }
+
+  VLOG(2) << "USB Request USB scan devicelist permission "
+          << "package: " << package;
+  ui_delegate_->RequestUsbScanDeviceListPermission(package,
+                                                   std::move(callback));
+}
+
 }  // namespace arc

components/arc/usb/usb_host_bridge.h

@@ -80,6 +80,8 @@ class ArcUsbHostBridge : public KeyedService,
                                   RequestPermissionCallback callback);
   bool HasPermissionForDevice(const std::string& guid,
                               const std::string& package);
+  void HandleScanDeviceListRequest(const std::string& package,
+                                   RequestPermissionCallback callback);
 
   ArcBridgeService* const arc_bridge_service_;  // Owned by ArcServiceManager.
   mojom::UsbHostHostPtr usb_host_ptr_;