Read HID report descriptor from sysfs and request permission on connect.

extensions/browser/api/hid/hid_api.h

Index: extensions/browser/api/hid/hid_api.h
diff --git a/extensions/browser/api/hid/hid_api.h b/extensions/browser/api/hid/hid_api.h
index 53ff66df71f72a3f60db45a573ad0787b3fb292a..9d5d84b13d3302527f5912d536c9ac64a682b992 100644
--- a/extensions/browser/api/hid/hid_api.h
+++ b/extensions/browser/api/hid/hid_api.h
@@ -15,6 +15,10 @@
 #include "extensions/browser/api/hid/hid_device_manager.h"
 #include "extensions/common/api/hid.h"
 
+namespace device {
+class HidService;
+}  // namespace device
+
 namespace net {
 class IOBuffer;
 }  // namespace net
@@ -74,7 +78,10 @@ class HidConnectFunction : public HidAsyncApiFunction {
  private:
   virtual ~HidConnectFunction();
 
+  void OnRequestAccessComplete(bool success);
+
   scoped_ptr<core_api::hid::Connect::Params> parameters_;
+  device::HidDeviceInfo device_info_;
 
   DISALLOW_COPY_AND_ASSIGN(HidConnectFunction);
 };