Revert 216744 "Pepper: Move FileRef to the "new" resource proxy."

> Pepper: Move FileRef to the "new" resource proxy.
> 
> This change moves the FileRef implementation from the previous one in the "old"
> resource model (ppb_file_ref_impl.cc) to the "new" resource model
> (pepper_file_ref_host.cc), and from the renderer to the browser.
> 
> As many as possible of the supporting changes were split off to other changes
> to minimize the size of this change. Unfortunately, a lot of changes for
> URLLoader had to be rolled into this change.
> 
> The data structures for CreateInfo have changed, and all users of FileRef have
> to be moved over, which is what causes this change to be so large.
> 
> TBR=dmichael@chromium.org, jschuh@chromium.org, yzshen@chromium.org
> BUG=225441
> 
> Review URL: https://codereview.chromium.org/21966004

TBR=teravest@google.com

Review URL: https://codereview.chromium.org/22903002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@217036 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 70 insertions, 0 deletions

diff --git a/ppapi/shared_impl/ppb_file_ref_shared.h b/ppapi/shared_impl/ppb_file_ref_shared.h
new file mode 100644
index 0000000..5025eb3
--- /dev/null
+++ b/ppapi/shared_impl/ppb_file_ref_shared.h
@@ -0,0 +1,70 @@
+// 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.
+
+#ifndef PPAPI_SHARED_IMPL_PPB_FILE_REF_SHARED_H_
+#define PPAPI_SHARED_IMPL_PPB_FILE_REF_SHARED_H_
+
+#include <string>
+
+#include "base/compiler_specific.h"
+#include "ppapi/shared_impl/resource.h"
+#include "ppapi/thunk/ppb_file_ref_api.h"
+
+namespace ppapi {
+
+class StringVar;
+
+// FileRefs are created in a number of places and they include a number of
+// return values. This struct encapsulates everything in one place.
+struct PPB_FileRef_CreateInfo {
+  PPB_FileRef_CreateInfo()
+      : file_system_type(PP_FILESYSTEMTYPE_EXTERNAL),
+        file_system_plugin_resource(0) {}
+
+  ppapi::HostResource resource;
+  int file_system_type;  // One of PP_FileSystemType values.
+  std::string path;
+  std::string name;
+
+  // Since FileRef needs to hold a FileSystem reference, we need to pass the
+  // resource in this CreateInfo.  Note that this is a plugin resource as
+  // FileSystem is already in new design.
+  PP_Resource file_system_plugin_resource;
+};
+
+// This class provides the shared implementation of a FileRef. The functions
+// that actually "do stuff" like Touch and MakeDirectory are implemented
+// differently for the proxied and non-proxied derived classes.
+class PPAPI_SHARED_EXPORT PPB_FileRef_Shared
+    : public Resource,
+      public thunk::PPB_FileRef_API {
+ public:
+  PPB_FileRef_Shared(ResourceObjectType type,
+                     const PPB_FileRef_CreateInfo& info);
+  virtual ~PPB_FileRef_Shared();
+
+  // Resource overrides.
+  virtual thunk::PPB_FileRef_API* AsPPB_FileRef_API() OVERRIDE;
+
+  // PPB_FileRef_API implementation (partial).
+  virtual PP_FileSystemType GetFileSystemType() const OVERRIDE;
+  virtual PP_Var GetName() const OVERRIDE;
+  virtual PP_Var GetPath() const OVERRIDE;
+  virtual const PPB_FileRef_CreateInfo& GetCreateInfo() const OVERRIDE;
+  virtual PP_Var GetAbsolutePath() = 0;
+
+ private:
+  PPB_FileRef_CreateInfo create_info_;
+
+  // Lazily initialized vars created from the create_info_. This is so we can
+  // return the identical string object every time they're requested.
+  mutable scoped_refptr<StringVar> name_var_;
+  mutable scoped_refptr<StringVar> path_var_;
+
+  DISALLOW_IMPLICIT_CONSTRUCTORS(PPB_FileRef_Shared);
+};
+
+}  // namespace ppapi
+
+#endif  // PPAPI_SHARED_IMPL_PPB_FILE_REF_SHARED_H_