Fix HidService lifetime issues.

extensions/browser/api/extensions_api_client.h

Index: extensions/browser/api/extensions_api_client.h
diff --git a/extensions/browser/api/extensions_api_client.h b/extensions/browser/api/extensions_api_client.h
index 4a60df57da21d79a77d40aab1570674b6177214c..d2e07b7dc7ff896d4bcef4f777990a6bef91979e 100644
--- a/extensions/browser/api/extensions_api_client.h
+++ b/extensions/browser/api/extensions_api_client.h
@@ -19,10 +19,6 @@ namespace content {
 class BrowserContext;
 }
 
-namespace device {
-class HidService;
-}
-
 namespace extensions {
 
 class AppViewGuestDelegate;
@@ -76,9 +72,6 @@ class ExtensionsAPIClient {
   // Creates the AppViewGuestDelegate.
   virtual AppViewGuestDelegate* CreateAppViewGuestDelegate() const;
 
-  // Returns the HidService instance for this embedder.
-  virtual device::HidService* GetHidService();
-
   // Returns a delegate for some of WebViewGuest's behavior. The caller owns the
   // returned WebViewGuestDelegate.
   virtual WebViewGuestDelegate* CreateWebViewGuestDelegate (