Implemented policy to disable plugin finder.

content/browser/plugin_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.
 
 #include "content/browser/plugin_process_host.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #elif defined(OS_POSIX)
 #include <utility>  // for pair<>
 #endif
 
 #include <vector>
 
 #include "app/app_switches.h"
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/path_service.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
+#include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_plugin_browsing_context.h"
 #include "chrome/browser/net/url_request_tracking.h"
 #include "chrome/browser/plugin_download_helper.h"
 #include "chrome/browser/plugin_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_plugin_lib.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/logging_chrome.h"
 #include "chrome/common/net/url_request_context_getter.h"
@@ skipping 414 matching lines @@
 }
 
 void PluginProcessHost::OnChannelCreated(
     const IPC::ChannelHandle& channel_handle) {
   Client* client = sent_requests_.front();
 
   client->OnChannelOpened(channel_handle);
   sent_requests_.pop();
 }
 
 void PluginProcessHost::OnGetPluginFinderUrl(std::string* plugin_finder_url) {

[Bernhard Bauer, 2011/02/24 16:25:19]

We should move this into a MessageFilter some time. Could you add a TODO(bauerb)
for that?

[pastarmovj, 2011/02/25 09:56:37]

Done.

   if (!plugin_finder_url) {
     NOTREACHED();
     return;
   }
 
-  // TODO(iyengar)  Add the plumbing to retrieve the default
-  // plugin finder URL.
-  *plugin_finder_url = kDefaultPluginFinderURL;
+  if (!g_browser_process->plugin_finder_disabled()) {
+    // TODO(iyengar) Add the plumbing to retrieve the default
+    // plugin finder URL.
+    *plugin_finder_url = kDefaultPluginFinderURL;
+  } else {
+    plugin_finder_url->clear();
+  }
 }
 
 void PluginProcessHost::OnPluginMessage(
     const std::vector<uint8>& data) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
   ChromePluginLib *chrome_plugin = ChromePluginLib::Find(info_.path);
   if (chrome_plugin) {
     void *data_ptr = const_cast<void*>(reinterpret_cast<const void*>(&data[0]));
     uint32 data_len = static_cast<uint32>(data.size());
     chrome_plugin->functions().on_message(data_ptr, data_len);
   }
 }