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

trunk/src/courgette/third_party/bsdiff_apply.cc

Index: trunk/src/courgette/third_party/bsdiff_apply.cc
===================================================================
--- trunk/src/courgette/third_party/bsdiff_apply.cc	(revision 207822)
+++ trunk/src/courgette/third_party/bsdiff_apply.cc	(working copy)
@@ -26,8 +26,6 @@
  * Changelog:
  * 2009-03-31 - Change to use Streams.  Move CRC code to crc.{h,cc}
  *                --Stephen Adams <sra@chromium.org>
- * 2013-04-10 - Add wrapper method to apply a patch to files directly.
- *                --Joshua Pawlicki <waffles@chromium.org>
  */
 
 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
@@ -36,7 +34,6 @@
 
 #include "courgette/third_party/bsdiff.h"
 
-#include "base/files/memory_mapped_file.h"
 #include "courgette/crc.h"
 #include "courgette/streams.h"
 
@@ -171,42 +168,4 @@
   return OK;
 }
 
-BSDiffStatus ApplyBinaryPatch(const base::FilePath& old_file_path,
-                              const base::FilePath& patch_file_path,
-                              const base::FilePath& new_file_path) {
-  // Set up the old stream.
-  base::MemoryMappedFile old_file;
-  if (!old_file.Initialize(old_file_path)) {
-    return READ_ERROR;
-  }
-  SourceStream old_file_stream;
-  old_file_stream.Init(old_file.data(), old_file.length());
-
-  // Set up the patch stream.
-  base::MemoryMappedFile patch_file;
-  if (!patch_file.Initialize(patch_file_path)) {
-    return READ_ERROR;
-  }
-  SourceStream patch_file_stream;
-  patch_file_stream.Init(patch_file.data(), patch_file.length());
-
-  // Set up the new stream and apply the patch.
-  SinkStream new_sink_stream;
-  BSDiffStatus status = ApplyBinaryPatch(&old_file_stream,
-                                         &patch_file_stream,
-                                         &new_sink_stream);
-  if (status != OK) {
-    return status;
-  }
-
-  // Write the stream to disk.
-  int written = file_util::WriteFile(
-      new_file_path,
-      reinterpret_cast<const char*>(new_sink_stream.Buffer()),
-      static_cast<int>(new_sink_stream.Length()));
-  if (written != static_cast<int>(new_sink_stream.Length()))
-    return WRITE_ERROR;
-  return OK;
-}
-
 }  // namespace