Don't build a bunch of stuff on Aura, rather than ifdefing out code in it.

chrome/browser/chrome_content_browser_client.cc

 // Copyright (c) 2011 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 "chrome/browser/chrome_content_browser_client.h"
 
 #include <set>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 311 matching lines @@
 
   SendExtensionWebRequestStatusToHost(host);
 
   RendererContentSettingRules rules;
   GetRendererContentSettingRules(profile->GetHostContentSettingsMap(), &rules);
   host->Send(new ChromeViewMsg_SetContentSettingRules(rules));
 }
 
 void ChromeContentBrowserClient::PluginProcessHostCreated(
     PluginProcessHost* host) {
+#if !defined(USE_AURA)
   host->AddFilter(new ChromePluginMessageFilter(host));
+#endif
 }
 
 content::WebUIFactory* ChromeContentBrowserClient::GetWebUIFactory() {
   return ChromeWebUIFactory::GetInstance();
 }
 
 GURL ChromeContentBrowserClient::GetEffectiveURL(
     content::BrowserContext* browser_context, const GURL& url) {
   Profile* profile = Profile::FromBrowserContext(browser_context);
   // Get the effective URL for the given actual URL. If the URL is part of an
@@ skipping 773 matching lines @@
 #if defined(USE_NSS)
 crypto::CryptoModuleBlockingPasswordDelegate*
     ChromeContentBrowserClient::GetCryptoPasswordDelegate(
         const GURL& url) {
   return browser::NewCryptoModuleBlockingDialogDelegate(
       browser::kCryptoModulePasswordKeygen, url.host());
 }
 #endif
 
 }  // namespace chrome