Support permission_broker for chrome.hid devices.

chrome/browser/extensions/api/chrome_extensions_api_client.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/api/chrome_extensions_api_client.h"
 
 #include "base/files/file_path.h"
 #include "chrome/browser/extensions/api/storage/sync_value_store_cache.h"
 #include "chrome/browser/guest_view/app_view/app_view_guest.h"
 #include "content/public/browser/browser_context.h"
+#include "content/public/browser/browser_thread.h"
+#include "device/hid/hid_service.h"
 
 #if defined(ENABLE_CONFIGURATION_POLICY)
 #include "chrome/browser/extensions/api/storage/managed_value_store_cache.h"
 #endif
 
 namespace extensions {
 
 ChromeExtensionsAPIClient::ChromeExtensionsAPIClient() {}
 
 ChromeExtensionsAPIClient::~ChromeExtensionsAPIClient() {}
@@ skipping 28 matching lines @@
 bool ChromeExtensionsAPIClient::AppViewInternalDenyRequest(
     content::BrowserContext* browser_context,
     int guest_instance_id,
     const std::string& guest_extension_id) {
   return AppViewGuest::CompletePendingRequest(browser_context,
                                               GURL(),
                                               guest_instance_id,
                                               guest_extension_id);
 }
 
+device::HidService* ChromeExtensionsAPIClient::GetHidService() {
+  if (!hid_service_) {
+    hid_service_.reset(device::HidService::Create(
+        content::BrowserThread::GetMessageLoopProxyForThread(
+            content::BrowserThread::UI)));
+  }
+  return hid_service_.get();
+}
+
 }  // namespace extensions