Removed --disable-print-preview switch and policy.

chrome/browser/renderer_context_menu/render_view_context_menu.cc

 // Copyright 2014 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/renderer_context_menu/render_view_context_menu.h"
 
 #include <algorithm>
 #include <set>
 #include <utility>
 
@@ skipping 1480 matching lines @@
 
     case IDC_PRINT:
 #if defined(ENABLE_PRINTING)
       if (params_.media_type == WebContextMenuData::MediaTypeNone) {
 #if defined(ENABLE_FULL_PRINTING)
         printing::PrintViewManager* print_view_manager =
             printing::PrintViewManager::FromWebContents(source_web_contents_);
 
         if (!print_view_manager)
           break;
-        if (GetPrefs(browser_context_)
-                ->GetBoolean(prefs::kPrintPreviewDisabled)) {
-          print_view_manager->PrintNow();

[Lei Zhang, 2014/08/20 00:01:15]

Is PrintNow() dead code?

[Vitaly Buka (NO REVIEWS), 2014/08/20 01:16:14]

Done.

-        } else {
-          print_view_manager->PrintPreviewNow(!params_.selection_text.empty());
-        }
+        print_view_manager->PrintPreviewNow(!params_.selection_text.empty());
 #else
         printing::PrintViewManagerBasic* print_view_manager =
             printing::PrintViewManagerBasic::FromWebContents(
                 source_web_contents_);
         if (!print_view_manager)
           break;
         print_view_manager->PrintNow();
 #endif  // defined(ENABLE_FULL_PRINTING)
       } else {
         if (render_frame_host) {
@@ skipping 269 matching lines @@
   source_web_contents_->GetRenderViewHost()->
       ExecuteMediaPlayerActionAtLocation(location, action);
 }
 
 void RenderViewContextMenu::PluginActionAt(
     const gfx::Point& location,
     const WebPluginAction& action) {
   source_web_contents_->GetRenderViewHost()->
       ExecutePluginActionAtLocation(location, action);
 }