Load NPAPI plugin resources through the browser process directly instead of going through the render

content/browser/plugin_process_host.h

 // Copyright (c) 2012 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.
 
 #ifndef CONTENT_BROWSER_PLUGIN_PROCESS_HOST_H_
 #define CONTENT_BROWSER_PLUGIN_PROCESS_HOST_H_
 
 #include "build/build_config.h"
 
 #include <list>
+#include <map>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/browser_child_process_host_delegate.h"
 #include "content/public/browser/browser_child_process_host_iterator.h"
 #include "content/public/common/process_type.h"
 #include "content/public/common/webplugininfo.h"
 #include "ipc/ipc_channel_proxy.h"
 #include "ui/gfx/native_widget_types.h"
+#include "webkit/common/resource_type.h"
+
+struct ResourceHostMsg_Request;
 
 namespace gfx {
 class Rect;
 }
 
 namespace IPC {
 struct ChannelHandle;
 }
 
+namespace net {
+class URLRequestContext;
+}
+
 namespace content {
 class BrowserChildProcessHostImpl;
 class ResourceContext;
 
 // Represents the browser side of the browser <--> plugin communication
 // channel.  Different plugins run in their own process, but multiple instances
 // of the same plugin run in the same process.  There will be one
 // PluginProcessHost per plugin process, matched with a corresponding
 // PluginProcess running in the plugin process.  The browser is responsible for
 // starting the plugin process when a plugin is created that doesn't already
@@ skipping 36 matching lines @@
 
   virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
   virtual void OnChannelConnected(int32 peer_pid) OVERRIDE;
   virtual void OnChannelError() OVERRIDE;
 
   // Tells the plugin process to create a new channel for communication with a
   // renderer.  When the plugin process responds with the channel name,
   // OnChannelOpened in the client is called.
   void OpenChannelToPlugin(Client* client);
 
-  // Cancels all pending channel requests for the given resource context.
-  static void CancelPendingRequestsForResourceContext(ResourceContext* context);
-
   // This function is called to cancel pending requests to open new channels.
   void CancelPendingRequest(Client* client);
 
   // This function is called to cancel sent requests to open new channels.
   void CancelSentRequest(Client* client);
 
   // This function is called on the IO thread once we receive a reply from the
   // modal HTML dialog (in the form of a JSON string). This function forwards
   // that reply back to the plugin that requested the dialog.
   void OnModalDialogResponse(const std::string& json_retval,
@@ skipping 15 matching lines @@
   // Adds an IPC message filter.  A reference will be kept to the filter.
   void AddFilter(IPC::ChannelProxy::MessageFilter* filter);
 
  private:
   // Sends a message to the plugin process to request creation of a new channel
   // for the given mime type.
   void RequestPluginChannel(Client* client);
 
   // Message handlers.
   void OnChannelCreated(const IPC::ChannelHandle& channel_handle);
+  void OnChannelDestroyed(int renderer_id);
 
 #if defined(OS_WIN)
   void OnPluginWindowDestroyed(HWND window, HWND parent);
 #endif
 
 #if defined(USE_X11)
   void OnMapNativeViewId(gfx::NativeViewId id, gfx::PluginWindowHandle* output);
 #endif
 
 #if defined(OS_MACOSX)
   void OnPluginSelectWindow(uint32 window_id, gfx::Rect window_rect,
                             bool modal);
   void OnPluginShowWindow(uint32 window_id, gfx::Rect window_rect,
                           bool modal);
   void OnPluginHideWindow(uint32 window_id, gfx::Rect window_rect);
   void OnPluginSetCursorVisibility(bool visible);
 #endif
 
   virtual bool CanShutdown() OVERRIDE;
   virtual void OnProcessCrashed(int exit_code) OVERRIDE;
 
   void CancelRequests();
 
+  // Callback for ResourceMessageFilter.
+  void GetContexts(const ResourceHostMsg_Request& request,
+                   ResourceContext** resource_context,
+                   net::URLRequestContext** request_context);
+
   // These are channel requests that we are waiting to send to the
   // plugin process once the channel is opened.
   std::vector<Client*> pending_requests_;
 
   // These are the channel requests that we have already sent to
   // the plugin process, but haven't heard back about yet.
   std::list<Client*> sent_requests_;
 
   // Information about the plugin.
   WebPluginInfo info_;
 
 #if defined(OS_WIN)
   // Tracks plugin parent windows created on the UI thread.
   std::set<HWND> plugin_parent_windows_set_;
 #endif
 #if defined(OS_MACOSX)
   // Tracks plugin windows currently visible.
   std::set<uint32> plugin_visible_windows_set_;
   // Tracks full screen windows currently visible.
   std::set<uint32> plugin_fullscreen_windows_set_;
   // Tracks modal windows currently visible.
   std::set<uint32> plugin_modal_windows_set_;
   // Tracks the current visibility of the cursor.
   bool plugin_cursor_visible_;
 #endif
 
+  // Map from render_process_id to its ResourceContext
+  typedef std::map<int, ResourceContext*> ResourceContextMap;
+  ResourceContextMap resource_context_map_;
+
   scoped_ptr<BrowserChildProcessHostImpl> process_;
 
   DISALLOW_COPY_AND_ASSIGN(PluginProcessHost);
 };
 
 class PluginProcessHostIterator
     : public BrowserChildProcessHostTypeIterator<PluginProcessHost> {
  public:
   PluginProcessHostIterator()
       : BrowserChildProcessHostTypeIterator<PluginProcessHost>(
           PROCESS_TYPE_PLUGIN) {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_PLUGIN_PROCESS_HOST_H_