Remove keep-alive impulse IPCs from NaCl modules.

components/nacl/browser/test_nacl_browser_delegate.cc

 // Copyright 2013 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 "base/callback.h"
 #include "components/nacl/browser/test_nacl_browser_delegate.h"
 
 TestNaClBrowserDelegate::TestNaClBrowserDelegate() {}
 
 TestNaClBrowserDelegate::~TestNaClBrowserDelegate() {}
@@ skipping 39 matching lines @@
 }
 
 void TestNaClBrowserDelegate::SetDebugPatterns(
     const std::string& debug_patterns) {}
 
 bool TestNaClBrowserDelegate::URLMatchesDebugPatterns(
     const GURL& manifest_url) {
   return false;
 }
 
-content::BrowserPpapiHost::OnKeepaliveCallback
-TestNaClBrowserDelegate::GetOnKeepaliveCallback() {
-  return content::BrowserPpapiHost::OnKeepaliveCallback();
-}
-
 bool TestNaClBrowserDelegate::IsNonSfiModeAllowed(
     const base::FilePath& profile_directory,
     const GURL& manifest_url) {
   return false;
 }