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

chrome/browser/chrome_content_browser_client.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 "chrome/browser/chrome_content_browser_client.h"
 
 #include <set>
 #include <utility>
 #include <vector>
 
@@ skipping 1949 matching lines @@
     if (host->process() &&
         host->process()->GetData().id == plugin_process_id) {
       // Found the plugin.
       return host->browser_ppapi_host();
     }
     ++iter;
   }
   return NULL;
 }
 
+bool ChromeContentBrowserClient::SupportsBrowserPlugin(
+    content::BrowserContext* browser_context, const GURL& site_url) {
+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kEnableBrowserPluginForAllViewTypes))
+    return true;
+
+  Profile* profile = Profile::FromBrowserContext(browser_context);
+  ExtensionService* service =
+      extensions::ExtensionSystem::Get(profile)->extension_service();
+  if (!service)
+    return false;
+
+  const Extension* extension = service->extensions()->
+      GetExtensionOrAppByURL(ExtensionURLInfo(site_url));
+  if (!extension)
+    return false;
+
+  return extension->HasAPIPermission(APIPermission::kWebView);
+}
+
 bool ChromeContentBrowserClient::AllowPepperSocketAPI(
     content::BrowserContext* browser_context,
     const GURL& url,
     const content::SocketPermissionRequest& params) {
   if (!url.is_valid())
     return false;
 
   std::string host = url.host();
   if (url.SchemeIs(extensions::kExtensionScheme) &&
       allowed_socket_origins_.count(host)) {
@@ skipping 175 matching lines @@
     io_thread_application_locale_ = locale;
 }
 
 void ChromeContentBrowserClient::SetApplicationLocaleOnIOThread(
     const std::string& locale) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   io_thread_application_locale_ = locale;
 }
 
 }  // namespace chrome