Add more generic filters to the chrome.hid.getDevices API.

extensions/common/api/hid.idl

Index: extensions/common/api/hid.idl
diff --git a/extensions/common/api/hid.idl b/extensions/common/api/hid.idl
index c6bb316311968db0d462bea3e9e8464635854e3a..11ee6b97b48a6cd1e74ae4c586703b447ad0a594 100644
--- a/extensions/common/api/hid.idl
+++ b/extensions/common/api/hid.idl
@@ -42,10 +42,19 @@ namespace hid {
     long connectionId;
   };
 
-  // Searching criteria to enumerate devices with.
+  // Device matching criteria.
+  dictionary HidDeviceFilter {
+    long? vendorId;
+    long? productId;
+    long? usagePage;
+    long? usage;
+  };
+
+  // Options passed to <code>getDevices</code>.
   dictionary GetDevicesOptions {
-    long vendorId;
-    long productId;
+    long? vendorId;
+    long? productId;
+    HidDeviceFilter[]? filters;
   };
 
   callback GetDevicesCallback = void (HidDeviceInfo[] devices);