Add an IPC channel between the NaCl loader process and the renderer.

chrome/renderer/chrome_ppapi_interfaces.cc

Index: chrome/renderer/chrome_ppapi_interfaces.cc
===================================================================
--- chrome/renderer/chrome_ppapi_interfaces.cc	(revision 133072)
+++ chrome/renderer/chrome_ppapi_interfaces.cc	(working copy)
@@ -27,7 +27,26 @@
 #include "content/public/common/sandbox_init.h"
 #endif
 
+#include "base/path_service.h"
+#include "chrome/common/chrome_paths.h"
+#include "content/public/browser/plugin_service.h"
+#include "content/public/common/content_client.h"
+#include "content/public/renderer/render_thread.h"
+#include "content/public/renderer/render_view.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebDocument.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebElement.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebNode.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebPluginContainer.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
+#include "webkit/plugins/ppapi/host_globals.h"
+#include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
+
 using content::RenderThread;
+using webkit::ppapi::HostGlobals;
+using webkit::ppapi::PluginInstance;
+using WebKit::WebElement;
+using WebKit::WebView;
 
 namespace chrome {
 
@@ -38,10 +57,12 @@
 }  // namespace
 
 // Launch NaCl's sel_ldr process.
-bool LaunchSelLdr(const char* alleged_url, int socket_count,
+bool LaunchSelLdr(PP_Instance instance,
+                  const char* alleged_url, int socket_count,
                   void* imc_handles, void* nacl_process_handle,
                   int* nacl_process_id) {
   std::vector<nacl::FileDescriptor> sockets;
+  std::string ppapi_channel_name;
   base::ProcessHandle nacl_process;
   IPC::Message::Sender* sender = RenderThread::Get();
   if (sender == NULL) {
@@ -52,6 +73,7 @@
           GURL(alleged_url),
           socket_count,
           &sockets,
+          &ppapi_channel_name,
           &nacl_process,
           reinterpret_cast<base::ProcessId*>(nacl_process_id)))) {
     return false;
@@ -62,6 +84,21 @@
         nacl::ToNativeHandle(sockets[i]);
   }
   *static_cast<nacl::Handle*>(nacl_process_handle) = nacl_process;
+
+  // Using the RenderView, establish the HostDispatcher for the PPAPI proxy.
+  webkit::ppapi::PluginInstance* plugin_instance =
+      content::GetHostGlobals()->GetInstance(instance);
+  if (!plugin_instance)
+    return false;
+  FilePath nacl_plugin_path;
+  if (!PathService::Get(chrome::FILE_NACL_PLUGIN, &nacl_plugin_path))
+    return false;
+
+  WebView* view =
+      plugin_instance->container()->element().document().frame()->view();
+  content::RenderView* render_view = content::RenderView::FromWebView(view);
+  render_view->CreateHostDispatcher(
+      nacl_plugin_path, *nacl_process_id, nacl_process, ppapi_channel_name);
   return true;
 }