Don't use command line flags for enabling the internal pdf plugin. Instead, ...

chrome/common/chrome_plugin_lib.cc

 // Copyright (c) 2006-2008 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/common/chrome_plugin_lib.h"
 
 #include "base/command_line.h"
 #include "base/hash_tables.h"
 #include "base/histogram.h"
 #include "base/message_loop.h"
@@ skipping 97 matching lines @@
 // static
 void ChromePluginLib::RegisterPluginsWithNPAPI() {
   // We don't support ChromePlugins in single-process mode.
   if (IsSingleProcessMode())
     return;
 
   FilePath path;
   // Register Gears, if available.
   if (PathService::Get(chrome::FILE_GEARS_PLUGIN, &path))
     NPAPI::PluginList::Singleton()->AddExtraPluginPath(path);
-
-  // Register the internal Flash, if available.
-  if (!CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kDisableInternalFlash) &&
-      PathService::Get(chrome::FILE_FLASH_PLUGIN, &path))
-    NPAPI::PluginList::Singleton()->AddExtraPluginPath(path);
 }
 
 static void LogPluginLoadTime(const TimeDelta &time) {
   UMA_HISTOGRAM_TIMES("Gears.LoadTime", time);
 }
 
 // static
 void ChromePluginLib::LoadChromePlugins(const CPBrowserFuncs* bfuncs) {
   static bool loaded = false;
   if (loaded)
@@ skipping 153 matching lines @@
   if (initialized_)
     CP_Shutdown();
 
 #if defined(OS_WIN)
   if (module_) {
     FreeLibrary(module_);
     module_ = 0;
   }
 #endif
 }