Use UtilityProcessHost to patch files.

chrome/utility/chrome_content_utility_client.cc

 // 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.
 
 #include "chrome/utility/chrome_content_utility_client.h"
 
 #include "base/base64.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
@@ skipping 13 matching lines @@
 #include "chrome/utility/cloud_print/bitmap_image.h"
 #include "chrome/utility/cloud_print/pwg_encoder.h"
 #include "chrome/utility/extensions/unpacker.h"
 #include "chrome/utility/image_writer/image_writer_handler.h"
 #include "chrome/utility/profile_import_handler.h"
 #include "chrome/utility/web_resource_unpacker.h"
 #include "content/public/child/image_decoder_utils.h"
 #include "content/public/common/content_paths.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/utility/utility_thread.h"
+#include "courgette/courgette.h"
+#include "courgette/third_party/bsdiff.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/manifest.h"
 #include "media/base/media.h"
 #include "media/base/media_file_checker.h"
 #include "printing/page_range.h"
 #include "printing/pdf_render_settings.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "third_party/zlib/google/zip.h"
 #include "ui/base/ui_base_switches.h"
 #include "ui/gfx/codec/jpeg_codec.h"
@@ skipping 320 matching lines @@
                         OnRenderPDFPagesToMetafile)
     IPC_MESSAGE_HANDLER(ChromeUtilityMsg_RenderPDFPagesToPWGRaster,
                         OnRenderPDFPagesToPWGRaster)
     IPC_MESSAGE_HANDLER(ChromeUtilityMsg_RobustJPEGDecodeImage,
                         OnRobustJPEGDecodeImage)
     IPC_MESSAGE_HANDLER(ChromeUtilityMsg_ParseJSON, OnParseJSON)
     IPC_MESSAGE_HANDLER(ChromeUtilityMsg_GetPrinterCapsAndDefaults,
                         OnGetPrinterCapsAndDefaults)
     IPC_MESSAGE_HANDLER(ChromeUtilityMsg_GetPrinterSemanticCapsAndDefaults,
                         OnGetPrinterSemanticCapsAndDefaults)
+    IPC_MESSAGE_HANDLER(ChromeUtilityMsg_PatchFileBsdiff,
+                        OnPatchFileBsdiff)
+    IPC_MESSAGE_HANDLER(ChromeUtilityMsg_PatchFileCourgette,
+                        OnPatchFileCourgette)
     IPC_MESSAGE_HANDLER(ChromeUtilityMsg_StartupPing, OnStartupPing)
     IPC_MESSAGE_HANDLER(ChromeUtilityMsg_AnalyzeZipFileForDownloadProtection,
                         OnAnalyzeZipFileForDownloadProtection)
 
 #if !defined(OS_ANDROID) && !defined(OS_IOS)
     IPC_MESSAGE_HANDLER(ChromeUtilityMsg_CheckMediaFile, OnCheckMediaFile)
     IPC_MESSAGE_HANDLER(ChromeUtilityMsg_ParseMediaMetadata,
                         OnParseMediaMetadata)
 #endif  // !defined(OS_ANDROID) && !defined(OS_IOS)
 
@@ skipping 410 matching lines @@
         printer_name, printer_info));
   } else  // NOLINT
 #endif
   {
     Send(new ChromeUtilityHostMsg_GetPrinterSemanticCapsAndDefaults_Failed(
         printer_name));
   }
   ReleaseProcessIfNeeded();
 }
 
+void ChromeContentUtilityClient::OnPatchFileBsdiff(
+    const base::FilePath& input_file,
+    const base::FilePath& patch_file,
+    const base::FilePath& output_file) {
+  if (input_file.empty() || patch_file.empty() || output_file.empty()) {
+    Send(new ChromeUtilityHostMsg_PatchFile_Failed(-1));
+  } else {
+    const int patch_status = courgette::ApplyBinaryPatch(input_file,
+                                                         patch_file,
+                                                         output_file);
+    if (patch_status != courgette::OK)
+      Send(new ChromeUtilityHostMsg_PatchFile_Failed(patch_status));
+    else
+      Send(new ChromeUtilityHostMsg_PatchFile_Succeeded());
+  }
+  ReleaseProcessIfNeeded();
+}
+
+void ChromeContentUtilityClient::OnPatchFileCourgette(
+    const base::FilePath& input_file,
+    const base::FilePath& patch_file,
+    const base::FilePath& output_file) {
+  if (input_file.empty() || patch_file.empty() || output_file.empty()) {
+    Send(new ChromeUtilityHostMsg_PatchFile_Failed(-1));
+  } else {
+    const int patch_status = courgette::ApplyEnsemblePatch(
+        input_file.value().c_str(),
+        patch_file.value().c_str(),
+        output_file.value().c_str());
+    if (patch_status != courgette::C_OK)
+      Send(new ChromeUtilityHostMsg_PatchFile_Failed(patch_status));
+    else
+      Send(new ChromeUtilityHostMsg_PatchFile_Succeeded());
+  }
+  ReleaseProcessIfNeeded();
+}
+
 void ChromeContentUtilityClient::OnStartupPing() {
   Send(new ChromeUtilityHostMsg_ProcessStarted);
   // Don't release the process, we assume further messages are on the way.
 }
 
 void ChromeContentUtilityClient::OnAnalyzeZipFileForDownloadProtection(
     const IPC::PlatformFileForTransit& zip_file) {
   safe_browsing::zip_analyzer::Results results;
   safe_browsing::zip_analyzer::AnalyzeZipFile(
       IPC::PlatformFileForTransitToPlatformFile(zip_file), &results);
@@ skipping 116 matching lines @@
     NetworkingPrivateCrypto crypto;
     success = crypto.EncryptByteString(public_key, key_data, &ciphertext);
   }
 
   Send(new ChromeUtilityHostMsg_GotEncryptedWiFiCredentials(ciphertext,
                                                             success));
 }
 #endif  // defined(OS_WIN)
 
 }  // namespace chrome