Support permission_broker for chrome.hid devices.

chrome/browser/extensions/api/chrome_extensions_api_client.cc

Index: chrome/browser/extensions/api/chrome_extensions_api_client.cc
diff --git a/chrome/browser/extensions/api/chrome_extensions_api_client.cc b/chrome/browser/extensions/api/chrome_extensions_api_client.cc
index cbd0cf4018652f7f92f731c8d82a16ccf303d3e1..7f6ed20d40147cc9c944378dac87ae4eb6b21290 100644
--- a/chrome/browser/extensions/api/chrome_extensions_api_client.cc
+++ b/chrome/browser/extensions/api/chrome_extensions_api_client.cc
@@ -8,6 +8,8 @@
 #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"
@@ -56,4 +58,13 @@ bool ChromeExtensionsAPIClient::AppViewInternalDenyRequest(
                                               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