Browser Plugin: Only install BrowserPluginMessageFilter if render process supports BrowserPlugin.

content/browser/site_instance_impl.cc

 // Copyright (c) 2012 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 "content/browser/site_instance_impl.h"
 
 #include "base/command_line.h"
 #include "content/browser/browsing_instance.h"
 #include "content/browser/child_process_security_policy_impl.h"
 #include "content/browser/renderer_host/render_process_host_impl.h"
@@ skipping 100 matching lines @@
 
     // Otherwise (or if that fails), create a new one.
     if (!process_) {
       if (render_process_host_factory_) {
         process_ = render_process_host_factory_->CreateRenderProcessHost(
             browser_context);
       } else {
         StoragePartitionImpl* partition =
             static_cast<StoragePartitionImpl*>(
                 BrowserContext::GetStoragePartition(browser_context, this));
+        bool supports_browser_plugin = GetContentClient()->browser()->
+            SupportsBrowserPlugin(browser_context, site_);
         process_ =
             new RenderProcessHostImpl(browser_context, partition,
+                                      supports_browser_plugin,
                                       site_.SchemeIs(chrome::kGuestScheme));
       }
     }
     CHECK(process_);
 
     // If we are using process-per-site, we need to register this process
     // for the current site so that we can find it again.  (If no site is set
     // at this time, we will register it in SetSite().)
     if (use_process_per_site) {
       RenderProcessHostImpl::RegisterProcessHostForSite(browser_context,
@@ skipping 194 matching lines @@
   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
   if (command_line.HasSwitch(switches::kEnableStrictSiteIsolation) ||
       command_line.HasSwitch(switches::kSitePerProcess)) {
     ChildProcessSecurityPolicyImpl* policy =
         ChildProcessSecurityPolicyImpl::GetInstance();
     policy->LockToOrigin(process_->GetID(), site_);
   }
 }
 
 }  // namespace content