Implement the file chooser as a new resource "host"

content/renderer/pepper/content_renderer_pepper_host_factory.cc

 // 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.
 
 #include "content/renderer/pepper/content_renderer_pepper_host_factory.h"
 
+#include "content/renderer/pepper/pepper_instance_state_accessor.h"
+#include "content/renderer/pepper/pepper_file_chooser_host.h"
 #include "ppapi/host/resource_host.h"
 #include "ppapi/proxy/ppapi_messages.h"
 
 using ppapi::host::ResourceHost;
 
 namespace content {
 
 ContentRendererPepperHostFactory::ContentRendererPepperHostFactory(
-    RenderViewImpl* render_view)
-    : render_view_(render_view) {
+    RenderViewImpl* render_view,
+    const ppapi::PpapiPermissions& permissions,
+    PepperInstanceStateAccessor* state)
+    : render_view_(render_view),
+      permissions_(permissions),
+      instance_state_(state) {
 }
 
 ContentRendererPepperHostFactory::~ContentRendererPepperHostFactory() {
 }
 
 scoped_ptr<ResourceHost> ContentRendererPepperHostFactory::CreateResourceHost(
     ppapi::host::PpapiHost* host,
     const ppapi::proxy::ResourceMessageCallParams& params,
     PP_Instance instance,
     const IPC::Message& message) {
-  // TODO(brettw) host creation goes here.
+  // Make sure the plugin is giving us a valid instance for this resource.
+  if (!instance_state_->IsValidInstance(instance))
+    return scoped_ptr<ResourceHost>();
+
+  // Resources for dev interfaces.
+  // TODO(brettw) when we support any public or private interfaces, put them in
+  // a separate switch above.
+  if (permissions_.HasPermission(ppapi::PERMISSION_DEV)) {
+    switch (message.type()) {
+      case PpapiHostMsg_FileChooser_Create::ID:
+        return scoped_ptr<ResourceHost>(new PepperFileChooserHost(
+            host, instance, params.pp_resource(), render_view_,
+            instance_state_));
+    }
+  }
   return scoped_ptr<ResourceHost>();
 }
 
 }  // namespace content