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

content/plugin/webplugin_proxy.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_PLUGIN_WEBPLUGIN_PROXY_H_
 #define CONTENT_PLUGIN_WEBPLUGIN_PROXY_H_
 
 #include <string>
 
 #include "base/containers/hash_tables.h"
 #include "base/memory/ref_counted.h"
 #if defined(OS_MACOSX)
 #include "base/mac/scoped_cftyperef.h"
 #endif
 #include "base/memory/scoped_handle.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/shared_memory.h"
 #include "base/memory/weak_ptr.h"
 #include "base/timer/timer.h"
 #include "content/child/npapi/webplugin.h"
 #include "ipc/ipc_message.h"
+#include "ipc/ipc_sender.h"
 #include "skia/ext/refptr.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "url/gurl.h"
 #if defined(USE_X11)
 #include "ui/base/x/x11_util.h"
 #endif
 #include "ui/gl/gpu_preference.h"
 #include "ui/surface/transport_dib.h"
 
+struct PluginMsg_FetchURL_Params;
+
 namespace content {
 class PluginChannel;
+class PluginURLFetcher;
 class WebPluginDelegateImpl;
 
 #if defined(OS_MACOSX)
 class WebPluginAcceleratedSurfaceProxy;
 #endif
 
 // This is an implementation of WebPlugin that proxies all calls to the
 // renderer.
-class WebPluginProxy : public WebPlugin {
+class WebPluginProxy : public WebPlugin,
+                       public IPC::Sender {
  public:
   // Creates a new proxy for WebPlugin, using the given sender to send the
   // marshalled WebPlugin calls.
   WebPluginProxy(PluginChannel* channel,
                  int route_id,
                  const GURL& page_url,
                  int host_render_view_routing_id);
   virtual ~WebPluginProxy();
 
   void set_delegate(WebPluginDelegateImpl* d) { delegate_ = d; }
 
   // WebPlugin overrides
   virtual void SetWindow(gfx::PluginWindowHandle window) OVERRIDE;
   virtual void SetAcceptsInputEvents(bool accepts) OVERRIDE;
   virtual void WillDestroyWindow(gfx::PluginWindowHandle window) OVERRIDE;
-#if defined(OS_WIN)
-  void SetWindowlessData(HANDLE pump_messages_event,
-                         gfx::NativeViewId dummy_activation_window);
-#endif
   virtual void CancelResource(unsigned long id) OVERRIDE;
   virtual void Invalidate() OVERRIDE;
   virtual void InvalidateRect(const gfx::Rect& rect) OVERRIDE;
   virtual NPObject* GetWindowScriptNPObject() OVERRIDE;
   virtual NPObject* GetPluginElement() OVERRIDE;
   virtual bool FindProxyForUrl(const GURL& url,
                                std::string* proxy_list) OVERRIDE;
   virtual void SetCookie(const GURL& url,
                          const GURL& first_party_for_cookies,
                          const std::string& cookie) OVERRIDE;
@@ skipping 13 matching lines @@
                       const TransportDIB::Handle& windowless_buffer1,
                       int windowless_buffer_index);
   virtual void CancelDocumentLoad() OVERRIDE;
   virtual void InitiateHTTPRangeRequest(
       const char* url, const char* range_info, int range_request_id) OVERRIDE;
   virtual void SetDeferResourceLoading(unsigned long resource_id,
                                        bool defer) OVERRIDE;
   virtual bool IsOffTheRecord() OVERRIDE;
   virtual void ResourceClientDeleted(
       WebPluginResourceClient* resource_client) OVERRIDE;
-
+  virtual void URLRedirectResponse(bool allow, int resource_id) OVERRIDE;
+#if defined(OS_WIN)
+  void SetWindowlessData(HANDLE pump_messages_event,
+                         gfx::NativeViewId dummy_activation_window);
+#endif
 #if defined(OS_MACOSX)
   virtual void FocusChanged(bool focused) OVERRIDE;
   virtual void StartIme() OVERRIDE;
   virtual WebPluginAcceleratedSurface*
       GetAcceleratedSurface(gfx::GpuPreference gpu_preference) OVERRIDE;
   virtual void AcceleratedPluginEnabledRendering() OVERRIDE;
   virtual void AcceleratedPluginAllocatedIOSurface(int32 width,
                                                    int32 height,
                                                    uint32 surface_id) OVERRIDE;
   virtual void AcceleratedPluginSwappedIOSurface() OVERRIDE;
 #endif
-  virtual void URLRedirectResponse(bool allow, int resource_id) OVERRIDE;
+
+  // IPC::Sender implementation.
+  virtual bool Send(IPC::Message* msg) OVERRIDE;
 
   // class-specific methods
 
   // Returns a WebPluginResourceClient object given its id, or NULL if no
   // object with that id exists.
   WebPluginResourceClient* GetResourceClient(int id);
 
   // Returns the id of the renderer that contains this plugin.
   int GetRendererId();
 
   // Returns the id of the associated render view.
   int host_render_view_routing_id() const {
     return host_render_view_routing_id_;
   }
 
   // For windowless plugins, paints the given rectangle into the local buffer.
   void Paint(const gfx::Rect& rect);
 
   // Callback from the renderer to let us know that a paint occurred.
   void DidPaint();
 
   // Notification received on a plugin issued resource request creation.
   void OnResourceCreated(int resource_id, WebPluginResourceClient* client);
 
+  // Starts fetching a URL through the browser process.
+  void FetchURL(const PluginMsg_FetchURL_Params& params);
+
 #if defined(OS_WIN) && !defined(USE_AURA)
   // Retrieves the IME status from a windowless plug-in and sends it to a
   // renderer process. A renderer process will convert the coordinates from
   // local to the window coordinates and send the converted coordinates to a
   // browser process.
   void UpdateIMEStatus();
 #endif
 
  private:
   class SharedTransportDIB : public base::RefCounted<SharedTransportDIB> {
    public:
     explicit SharedTransportDIB(TransportDIB* dib);
     TransportDIB* dib() { return dib_.get(); }
    private:
     friend class base::RefCounted<SharedTransportDIB>;
     ~SharedTransportDIB();
 
     scoped_ptr<TransportDIB> dib_;
   };
 
-  bool Send(IPC::Message* msg);
-
   // Handler for sending over the paint event to the plugin.
   void OnPaint(const gfx::Rect& damaged_rect);
 
 #if defined(OS_WIN)
   void CreateCanvasFromHandle(const TransportDIB::Handle& dib_handle,
                               const gfx::Rect& window_rect,
                               skia::RefPtr<SkCanvas>* canvas);
 #elif defined(OS_MACOSX)
   static void CreateDIBAndCGContextFromHandle(
       const TransportDIB::Handle& dib_handle,
@@ skipping 31 matching lines @@
   XID windowless_shm_pixmap() const {
     return windowless_shm_pixmaps_[windowless_buffer_index_];
   }
 #endif
 
 #endif
 
   typedef base::hash_map<int, WebPluginResourceClient*> ResourceClientMap;
   ResourceClientMap resource_clients_;
 
+  typedef base::hash_map<int, PluginURLFetcher*> PluginURLFetcherMap;
+  PluginURLFetcherMap plugin_url_fetchers_;
+
   scoped_refptr<PluginChannel> channel_;
   int route_id_;
   NPObject* window_npobject_;
   NPObject* plugin_element_;
   WebPluginDelegateImpl* delegate_;
   gfx::Rect damaged_rect_;
   bool waiting_for_paint_;
   // The url of the main frame hosting the plugin.
   GURL page_url_;
 
@@ skipping 22 matching lines @@
 
   // Contains the routing id of the host render view.
   int host_render_view_routing_id_;
 
   base::WeakPtrFactory<WebPluginProxy> weak_factory_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PLUGIN_WEBPLUGIN_PROXY_H_