Install platform apps into a separate data directory

chrome/common/extensions/extension_file_util.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/common/extensions/extension_file_util.h"
 
 #include <map>
 #include <vector>
 
 #include "base/file_util.h"
@@ skipping 28 matching lines @@
 // Returns false and sets the error if script file can't be loaded,
 // or if it's not UTF-8 encoded.
 static bool IsScriptValid(const FilePath& path, const FilePath& relative_path,
                           int message_id, std::string* error);
 
 const char kInstallDirectoryName[] = "Extensions";
 
 FilePath InstallExtension(const FilePath& unpacked_source_dir,
                           const std::string& id,
                           const std::string& version,
-                          const FilePath& all_extensions_dir) {
+                          const FilePath& all_extensions_dir,
+                          bool should_delete_source) {
   FilePath extension_dir = all_extensions_dir.AppendASCII(id);
   FilePath version_dir;
 
   // Create the extension directory if it doesn't exist already.
   if (!file_util::PathExists(extension_dir)) {
     if (!file_util::CreateDirectory(extension_dir))
       return FilePath();
   }
 
   FilePath profile_temp_dir = GetUserDataTempDir();
@@ skipping 14 matching lines @@
       !extension_temp_dir.CreateUniqueTempDirUnderPath(profile_temp_dir)) {
     LOG(ERROR) << "Creating of temp dir under in the profile failed.";
     return FilePath();
   }
   if (!file_util::CopyDirectory(unpacked_source_dir,
                                 extension_temp_dir.path(), true)) {
     LOG(ERROR) << "Moving extension from : " << unpacked_source_dir.value()
                << " to : " << extension_temp_dir.path().value() << " failed.";
     return FilePath();
   }
-  file_util::Delete(unpacked_source_dir, true);
+  if (should_delete_source)
+    file_util::Delete(unpacked_source_dir, true);
   FilePath crx_temp_source =
       extension_temp_dir.path().Append(unpacked_source_dir.BaseName());
 
   // Try to find a free directory. There can be legitimate conflicts in the case
   // of overinstallation of the same version.
   const int kMaxAttempts = 100;
   for (int i = 0; i < kMaxAttempts; ++i) {
     FilePath candidate = extension_dir.AppendASCII(
         base::StringPrintf("%s_%u", version.c_str(), i));
     if (!file_util::PathExists(candidate)) {
@@ skipping 584 matching lines @@
     return temp_path;
 
   return FilePath();
 }
 
 void DeleteFile(const FilePath& path, bool recursive) {
   file_util::Delete(path, recursive);
 }
 
 }  // namespace extension_file_util