Add PermissionPromptAndroid skeleton

chrome/browser/permissions/grouped_permission_infobar_delegate_android.cc

Index: chrome/browser/permissions/grouped_permission_infobar_delegate_android.cc
diff --git a/chrome/browser/permissions/grouped_permission_infobar_delegate_android.cc b/chrome/browser/permissions/grouped_permission_infobar_delegate_android.cc
index af595628b7095ecb5e2dca3fc0b71410f4cf5687..d8a66e3abab4572230fe7ef64aaa9df61694fe74 100644
--- a/chrome/browser/permissions/grouped_permission_infobar_delegate_android.cc
+++ b/chrome/browser/permissions/grouped_permission_infobar_delegate_android.cc
@@ -63,6 +63,16 @@ base::string16 GroupedPermissionInfoBarDelegate::GetMessageText() const {
       url_formatter::FormatUrlForSecurityDisplay(requesting_origin_));
 }
 
+bool GroupedPermissionInfoBarDelegate::Accept() {
+  // TODO(lshang): Implement this so that 'OK' button works.
+  return true;
+}
+
+bool GroupedPermissionInfoBarDelegate::Cancel() {
+  // TODO(lshang): Implement this so that 'Cancel' button works.
+  return true;
+}
+
 bool GroupedPermissionInfoBarDelegate::GetAcceptState(size_t position) {
   DCHECK_LT(position, requests_.size());
   return accept_states_[position];