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

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

Index: trunk/src/content/browser/renderer_host/pepper/pepper_file_ref_host.cc
===================================================================
--- trunk/src/content/browser/renderer_host/pepper/pepper_file_ref_host.cc	(revision 233010)
+++ trunk/src/content/browser/renderer_host/pepper/pepper_file_ref_host.cc	(working copy)
@@ -53,14 +53,15 @@
     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)) {
@@ -71,7 +72,7 @@
   backend_.reset(new PepperInternalFileRefBackend(
       host->GetPpapiHost(),
       render_process_id,
-      file_system_host->AsWeakPtr(),
+      base::AsWeakPtr(fs_host),
       path));
 }