Revert 207805 "Differential updates for components. We are addin..."

trunk/src/chrome/browser/component_updater/component_patcher.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 "chrome/browser/component_updater/component_patcher.h"
-
-#include <string>
-#include <vector>
-
-#include "base/file_util.h"
-#include "base/json/json_file_value_serializer.h"
-#include "base/values.h"
-#include "chrome/browser/component_updater/component_patcher_operation.h"
-#include "chrome/browser/component_updater/component_updater_service.h"
-
-namespace {
-
-// Deserialize the commands file (present in delta update packages). The top
-// level must be a list.
-base::ListValue* ReadCommands(const base::FilePath& unpack_path) {
-  const base::FilePath commands =
-      unpack_path.Append(FILE_PATH_LITERAL("commands.json"));
-  if (!file_util::PathExists(commands))
-    return NULL;
-
-  JSONFileValueSerializer serializer(commands);
-  scoped_ptr<base::Value> root(serializer.Deserialize(NULL, NULL));
-
-  return (root.get() && root->IsType(base::Value::TYPE_LIST)) ?
-      static_cast<base::ListValue*>(root.release()) : NULL;
-}
-
-}  // namespace
-
-
-// The patching support is not cross-platform at the moment.
-ComponentPatcherCrossPlatform::ComponentPatcherCrossPlatform() {}
-
-ComponentUnpacker::Error ComponentPatcherCrossPlatform::Patch(
-    PatchType patch_type,
-    const base::FilePath& input_file,
-    const base::FilePath& patch_file,
-    const base::FilePath& output_file,
-    int* error) {
-  return ComponentUnpacker::kDeltaUnsupportedCommand;
-}
-
-
-// Takes the contents of a differential component update in input_dir
-// and produces the contents of a full component update in unpack_dir
-// using input_abs_path_ files that the installer knows about.
-ComponentUnpacker::Error DifferentialUpdatePatch(
-    const base::FilePath& input_dir,
-    const base::FilePath& unpack_dir,
-    ComponentPatcher* patcher,
-    ComponentInstaller* installer,
-    int* error) {
-  *error = 0;
-  scoped_ptr<base::ListValue> commands(ReadCommands(input_dir));
-  if (!commands.get())
-    return ComponentUnpacker::kDeltaBadCommands;
-
-  for (base::ValueVector::const_iterator command = commands->begin(),
-      end = commands->end(); command != end; command++) {
-    if (!(*command)->IsType(base::Value::TYPE_DICTIONARY))
-      return ComponentUnpacker::kDeltaBadCommands;
-    base::DictionaryValue* command_args =
-        static_cast<base::DictionaryValue*>(*command);
-    scoped_ptr<DeltaUpdateOp> operation(CreateDeltaUpdateOp(command_args));
-    if (!operation)
-      return ComponentUnpacker::kDeltaUnsupportedCommand;
-
-    ComponentUnpacker::Error result = operation->Run(
-        command_args, input_dir, unpack_dir, patcher, installer, error);
-    if (result != ComponentUnpacker::kNone)
-      return result;
-  }
-
-  return ComponentUnpacker::kNone;
-}
-