Move component updater artifacts into component_updater namespace.

chrome/browser/component_updater/component_patcher.h

 // 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.
 
 // Component updates can be either differential updates or full updates.
 // Full updates come in CRX format; differential updates come in CRX-style
 // archives, but have a different magic number. They contain "commands.json", a
 // list of commands for the patcher to follow. The patcher uses these commands,
 // the other files in the archive, and the files from the existing installation
 // of the component to create the contents of a full update, which is then
@@ skipping 18 matching lines @@
 #define CHROME_BROWSER_COMPONENT_UPDATER_COMPONENT_PATCHER_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "chrome/browser/component_updater/component_unpacker.h"
 
 namespace base {
 class FilePath;
 }
 
+namespace component_updater {
+
 class ComponentInstaller;
 
 // Applies a delta patch to a single file. Specifically, creates a file at
 // |output_file| using |input_file| patched according to the algorithm
 // specified by |patch_type| using |patch_file|. Sets the value of error to
 // the error code of the failing patch operation, if there is such a failure.
 class ComponentPatcher {
  public:
   // The type of a patch file.
   enum PatchType {
@@ skipping 27 matching lines @@
 // is then installed normally.
 // The non-differential files are written into the |unpack_dir| directory.
 // Sets |error| to the error code of the first failing patch operation.
 ComponentUnpacker::Error DifferentialUpdatePatch(
     const base::FilePath& input_dir,
     const base::FilePath& unpack_dir,
     ComponentPatcher* component_patcher,
     ComponentInstaller* installer,
     int* error);
 
+}  // namespace component_updater
+
 #endif  // CHROME_BROWSER_COMPONENT_UPDATER_COMPONENT_PATCHER_H_