Revert 232547 "Pepper: Move FileIO host from renderer to browser."

trunk/src/content/browser/renderer_host/pepper/pepper_file_ref_host.cc

 // Copyright 2013 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/browser/renderer_host/pepper/pepper_file_ref_host.h"
 
 #include <string>
 
 #include "content/browser/renderer_host/pepper/pepper_external_file_ref_backend.h"
 #include "content/browser/renderer_host/pepper/pepper_file_system_browser_host.h"
@@ skipping 35 matching lines @@
   }
 
   ResourceHost* fs_resource_host =
       host->GetPpapiHost()->GetResourceHost(file_system);
   if (fs_resource_host == NULL) {
     DLOG(ERROR) << "Couldn't find FileSystem host: " << resource
                 << " path: " << path;
     return;
   }
 
-  if (!fs_resource_host->IsFileSystemHost()) {
+  PepperFileSystemBrowserHost* fs_host = NULL;
+  if (fs_resource_host->IsFileSystemHost())
+    fs_host = static_cast<PepperFileSystemBrowserHost*>(fs_resource_host);
+  if (fs_host == NULL) {
     DLOG(ERROR) << "Filesystem PP_Resource is not PepperFileSystemBrowserHost";
     return;
   }
 
-  PepperFileSystemBrowserHost* file_system_host =
-      static_cast<PepperFileSystemBrowserHost*>(fs_resource_host);
-  fs_type_ = file_system_host->GetType();
+  fs_type_ = fs_host->GetType();
   if ((fs_type_ != PP_FILESYSTEMTYPE_LOCALPERSISTENT) &&
       (fs_type_ != PP_FILESYSTEMTYPE_LOCALTEMPORARY) &&
       (fs_type_ != PP_FILESYSTEMTYPE_ISOLATED)) {
     DLOG(ERROR) << "Unsupported filesystem type: " << fs_type_;
     return;
   }
 
   backend_.reset(new PepperInternalFileRefBackend(
       host->GetPpapiHost(),
       render_process_id,
-      file_system_host->AsWeakPtr(),
+      base::AsWeakPtr(fs_host),
       path));
 }
 
 PepperFileRefHost::PepperFileRefHost(BrowserPpapiHost* host,
                                      PP_Instance instance,
                                      PP_Resource resource,
                                      const base::FilePath& external_path)
     : ResourceHost(host->GetPpapiHost(), instance, resource),
       host_(host),
       fs_type_(PP_FILESYSTEMTYPE_EXTERNAL) {
@@ skipping 159 matching lines @@
 
 int32_t PepperFileRefHost::OnGetAbsolutePath(
     ppapi::host::HostMessageContext* context) {
   if (!host_->GetPpapiHost()->permissions().HasPermission(
       ppapi::PERMISSION_PRIVATE))
     return PP_ERROR_NOACCESS;
   return backend_->GetAbsolutePath(context->MakeReplyMessageContext());
 }
 
 }  // namespace content