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

trunk/src/webkit/browser/fileapi/file_system_operation_impl.cc

Index: trunk/src/webkit/browser/fileapi/file_system_operation_impl.cc
===================================================================
--- trunk/src/webkit/browser/fileapi/file_system_operation_impl.cc	(revision 233010)
+++ trunk/src/webkit/browser/fileapi/file_system_operation_impl.cc	(working copy)
@@ -199,14 +199,17 @@
 
 void FileSystemOperationImpl::OpenFile(const FileSystemURL& url,
                                        int file_flags,
+                                       base::ProcessHandle peer_handle,
                                        const OpenFileCallback& callback) {
   DCHECK(SetPendingOperationType(kOperationOpenFile));
+  peer_handle_ = peer_handle;
 
   if (file_flags &
       (base::PLATFORM_FILE_TEMPORARY | base::PLATFORM_FILE_HIDDEN)) {
     callback.Run(base::PLATFORM_FILE_ERROR_FAILED,
                  base::kInvalidPlatformFileValue,
-                 base::Closure());
+                 base::Closure(),
+                 base::kNullProcessHandle);
     return;
   }
   GetUsageAndQuotaThenRunTask(
@@ -216,7 +219,8 @@
                  url, callback, file_flags),
       base::Bind(callback, base::PLATFORM_FILE_ERROR_FAILED,
                  base::kInvalidPlatformFileValue,
-                 base::Closure()));
+                 base::Closure(),
+                 base::kNullProcessHandle));
 }
 
 // We can only get here on a write or truncate that's not yet completed.
@@ -331,6 +335,7 @@
     : file_system_context_(file_system_context),
       operation_context_(operation_context.Pass()),
       async_file_util_(NULL),
+      peer_handle_(base::kNullProcessHandle),
       pending_operation_(kOperationNone),
       weak_factory_(this) {
   DCHECK(operation_context_.get());
@@ -548,7 +553,9 @@
     base::PlatformFileError rv,
     base::PassPlatformFile file,
     const base::Closure& on_close_callback) {
-  callback.Run(rv, file.ReleaseValue(), on_close_callback);
+  if (rv == base::PLATFORM_FILE_OK)
+    CHECK_NE(base::kNullProcessHandle, peer_handle_);
+  callback.Run(rv, file.ReleaseValue(), on_close_callback, peer_handle_);
 }
 
 bool FileSystemOperationImpl::SetPendingOperationType(OperationType type) {