Pepper: Move FileIO host from renderer to browser.

content/browser/renderer_host/pepper/pepper_file_ref_host.cc

Index: content/browser/renderer_host/pepper/pepper_file_ref_host.cc
diff --git a/content/browser/renderer_host/pepper/pepper_file_ref_host.cc b/content/browser/renderer_host/pepper/pepper_file_ref_host.cc
index f0fbbd1f79644fc7e89bed6a8b180d431488f761..2f27521cd397481c177e25539eca929ccb28e511 100644
--- a/content/browser/renderer_host/pepper/pepper_file_ref_host.cc
+++ b/content/browser/renderer_host/pepper/pepper_file_ref_host.cc
@@ -53,15 +53,14 @@ PepperFileRefHost::PepperFileRefHost(BrowserPpapiHost* host,
     return;
   }
 
-  PepperFileSystemBrowserHost* fs_host = NULL;
-  if (fs_resource_host->IsFileSystemHost())
-    fs_host = static_cast<PepperFileSystemBrowserHost*>(fs_resource_host);
-  if (fs_host == NULL) {
+  if (!fs_resource_host->IsFileSystemHost()) {
     DLOG(ERROR) << "Filesystem PP_Resource is not PepperFileSystemBrowserHost";
     return;
   }
 
-  fs_type_ = fs_host->GetType();
+  PepperFileSystemBrowserHost* file_system_host =
+      static_cast<PepperFileSystemBrowserHost*>(fs_resource_host);
+  fs_type_ = file_system_host->GetType();
   if ((fs_type_ != PP_FILESYSTEMTYPE_LOCALPERSISTENT) &&
       (fs_type_ != PP_FILESYSTEMTYPE_LOCALTEMPORARY) &&
       (fs_type_ != PP_FILESYSTEMTYPE_ISOLATED)) {
@@ -72,7 +71,7 @@ PepperFileRefHost::PepperFileRefHost(BrowserPpapiHost* host,
   backend_.reset(new PepperInternalFileRefBackend(
       host->GetPpapiHost(),
       render_process_id,
-      base::AsWeakPtr(fs_host),
+      file_system_host->AsWeakPtr(),
       path));
 }