Clean up the PermissionInfoBarDelegate hierarchy.

chrome/browser/media/protected_media_identifier_infobar_delegate_android.h

Index: chrome/browser/media/protected_media_identifier_infobar_delegate_android.h
diff --git a/chrome/browser/media/protected_media_identifier_infobar_delegate_android.h b/chrome/browser/media/protected_media_identifier_infobar_delegate_android.h
index 908ebdbe793f346e7099f4222875e5f796f01d83..776b8726911c56c3e5b65bec26a3e96e17e77e69 100644
--- a/chrome/browser/media/protected_media_identifier_infobar_delegate_android.h
+++ b/chrome/browser/media/protected_media_identifier_infobar_delegate_android.h
@@ -8,12 +8,12 @@
 #include <string>
 
 #include "base/macros.h"
-#include "chrome/browser/permissions/permission_infobar_delegate.h"
+#include "chrome/browser/permissions/single_permission_infobar_delegate.h"
 
 class InfoBarService;
 
 class ProtectedMediaIdentifierInfoBarDelegateAndroid
-    : public PermissionInfobarDelegate {
+    : public SinglePermissionInfoBarDelegate {
  public:
   // Creates a protected media identifier infobar and delegate and adds the
   // infobar to |infobar_service|.  Returns the infobar if it was successfully
@@ -40,8 +40,6 @@ class ProtectedMediaIdentifierInfoBarDelegateAndroid
   base::string16 GetLinkText() const override;
   GURL GetLinkURL() const override;
 
-  GURL requesting_frame_;
-
   DISALLOW_COPY_AND_ASSIGN(ProtectedMediaIdentifierInfoBarDelegateAndroid);
 };