Put some plug-ins behind an infobar, where they have:...

chrome/browser/renderer_host/browser_render_process_host.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.
 
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
 
 #include "chrome/browser/renderer_host/browser_render_process_host.h"
 
 #include <algorithm>
@@ skipping 714 matching lines @@
     switches::kEnableRemoting,
     switches::kEnableClickToPlay,
     switches::kEnableResourceContentSettings,
     switches::kEnableAcceleratedDecoding,
     switches::kDisableFileSystem,
     switches::kPpapiOutOfProcess,
     switches::kEnablePrintPreview,
     switches::kEnableCrxlessWebApps,
     switches::kDisable3DAPIs,
     switches::kEnableInBrowserThumbnailing,
+    switches::kAlwaysAuthorizePlugins,
   };
   renderer_cmd->CopySwitchesFrom(browser_cmd, kSwitchNames,
                                  arraysize(kSwitchNames));
 
   // Disable databases in incognito mode.
   if (profile()->IsOffTheRecord() &&
       !browser_cmd.HasSwitch(switches::kDisableDatabases)) {
     renderer_cmd->AppendSwitch(switches::kDisableDatabases);
   }
 
@@ skipping 546 matching lines @@
     IPC::PlatformFileForTransit file;
 #if defined(OS_POSIX)
     file = base::FileDescriptor(model_file, false);
 #elif defined(OS_WIN)
     ::DuplicateHandle(::GetCurrentProcess(), model_file, GetHandle(), &file, 0,
                       false, DUPLICATE_SAME_ACCESS);
 #endif
     Send(new ViewMsg_SetPhishingModel(file));
   }
 }