Add a policy pref for the --enable-memory-info flag.

chrome/browser/tab_contents/render_view_host_delegate_helper.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 "chrome/browser/tab_contents/render_view_host_delegate_helper.h"
 
 #include "base/command_line.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/background/background_contents_service.h"
@@ skipping 454 matching lines @@
         command_line.HasSwitch(switches::kEnableAcceleratedFilters);
     web_prefs.accelerated_layers_enabled =
         !command_line.HasSwitch(switches::kDisableAcceleratedLayers);
     web_prefs.composite_to_texture_enabled =
         command_line.HasSwitch(switches::kEnableCompositeToTexture);
     web_prefs.accelerated_plugins_enabled =
         !command_line.HasSwitch(switches::kDisableAcceleratedPlugins);
     web_prefs.accelerated_video_enabled =
         !command_line.HasSwitch(switches::kDisableAcceleratedVideo);
     web_prefs.memory_info_enabled =
-        command_line.HasSwitch(switches::kEnableMemoryInfo);
+        prefs->GetBoolean(prefs::kEnableMemoryInfo);
     web_prefs.interactive_form_validation_enabled =
         !command_line.HasSwitch(switches::kDisableInteractiveFormValidation);
     web_prefs.fullscreen_enabled =
         !command_line.HasSwitch(switches::kDisableFullScreen);
     web_prefs.allow_displaying_insecure_content =
         prefs->GetBoolean(prefs::kWebKitAllowDisplayingInsecureContent);
     web_prefs.allow_running_insecure_content =
         prefs->GetBoolean(prefs::kWebKitAllowRunningInsecureContent);
 
 #if defined(OS_MACOSX) || defined(TOUCH_UI)
@@ skipping 98 matching lines @@
   DictionaryValue* inspector_settings = update.Get();
   inspector_settings->SetWithoutPathExpansion(key,
                                               Value::CreateStringValue(value));
 }
 
 void RenderViewHostDelegateHelper::ClearInspectorSettings(
     content::BrowserContext* browser_context) {
   Profile::FromBrowserContext(browser_context)->GetPrefs()->
       ClearPref(prefs::kWebKitInspectorSettings);
 }