Print Preview: Always enable the internal PDF plugin for print preview.

content/browser/plugin_service.h

 // 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.
 
 // This class responds to requests from renderers for the list of plugins, and
 // also a proxy object for plugin instances.
 
 #ifndef CONTENT_BROWSER_PLUGIN_SERVICE_H_
 #define CONTENT_BROWSER_PLUGIN_SERVICE_H_
 #pragma once
 
 #include <string>
+#include <vector>
 
 #include "base/basictypes.h"
 #include "base/file_path.h"
 #include "base/hash_tables.h"
 #include "base/memory/scoped_vector.h"
 #include "base/memory/singleton.h"
 #include "base/synchronization/lock.h"
 #include "base/synchronization/waitable_event_watcher.h"
 #include "build/build_config.h"
 #include "content/browser/plugin_process_host.h"
@@ skipping 19 matching lines @@
 
 // This must be created on the main thread but it's only called on the IO/file
 // thread.
 class PluginService
     : public base::WaitableEventWatcher::Delegate,
       public NotificationObserver {
  public:
   struct OverriddenPlugin {
     int render_process_id;
     int render_view_id;
-    GURL url;
+    GURL url;  // If empty, the override applies to all urls in render_view.
     webkit::WebPluginInfo plugin;
   };
 
   // Returns the PluginService singleton.
   static PluginService* GetInstance();
 
   // Gets the browser's UI locale.
   const std::string& GetUILocale();
 
   // Returns the plugin process host corresponding to the plugin process that
@@ skipping 125 matching lines @@
 
   std::vector<OverriddenPlugin> overridden_plugins_;
   base::Lock overridden_plugins_lock_;
 
   DISALLOW_COPY_AND_ASSIGN(PluginService);
 };
 
 DISABLE_RUNNABLE_METHOD_REFCOUNT(PluginService);
 
 #endif  // CONTENT_BROWSER_PLUGIN_SERVICE_H_