Fix a memory leak in extension install.

chrome/browser/extensions/extensions_service.cc

 // Copyright (c) 2006-2008 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/extensions/extensions_service.h"
 
 #include "base/file_util.h"
 #include "base/scoped_handle.h"
 #include "base/scoped_temp_dir.h"
 #include "base/string_util.h"
@@ skipping 699 matching lines @@
 void ExtensionsServiceBackend::ReportExtensionInstalled(
     FilePath path, bool update) {
   frontend_->GetMessageLoop()->PostTask(FROM_HERE, NewRunnableMethod(
       frontend_,
       &ExtensionsServiceFrontendInterface::OnExtensionInstalled,
       path,
       update));
 
   // After it's installed, load it right away with the same settings.
   extension_path_ = path;
-  LoadExtensionCurrentVersion();
+  LOG(INFO) << "Loading extension " << path.value();
+  Extension* extension = LoadExtensionCurrentVersion();
+  if (extension) {
+    // Only one extension, but ReportExtensionsLoaded can handle multiple,
+    // so we need to construct a list.
+    scoped_ptr<ExtensionList> extensions(new ExtensionList);
+    extensions->push_back(extension);
+    LOG(INFO) << "Done.";
+    // Hand off ownership of the loaded extensions to the frontend.
+    ReportExtensionsLoaded(extensions.release());
+  }
 }
 
 // Some extensions will autoupdate themselves externally from Chrome.  These
 // are typically part of some larger client application package.  To support
 // these, the extension will register its location in the registry on Windows
 // (TODO(port): what about on other platforms?) and this code will periodically
 // check that location for a .crx file, which it will then install locally if
 // a new version is available.
 void ExtensionsServiceBackend::CheckForExternalUpdates(
     const FilePath& install_dir,
@@ skipping 84 matching lines @@
 
 bool ExtensionsServiceBackend::ShouldInstall(const std::string& id,
                                              const std::string& version) {
   FilePath dir(install_directory_.AppendASCII(id.c_str()));
   std::string current_version;
   if (ReadCurrentVersion(dir, &current_version)) {
     return !CheckCurrentVersion(version, current_version, dir);
   }
   return true;
 }