Handle termination/crashes of an extension hosted in the ExtensionDialog.

chrome/browser/extensions/component_loader.cc

 // Copyright (c) 2011 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/component_loader.h"
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "base/json/json_value_serializer.h"
@@ skipping 107 matching lines @@
   if (!manifest.get()) {
     LOG(ERROR) << "Could not load extension from '" <<
                   absolute_path.value() << "'. " << error;
     return NULL;
   }
   Remove(GenerateId(manifest.get()));
 
   return Add(manifest.release(), absolute_path);
 }
 
+void ComponentLoader::Reload(const std::string& extension_id) {
+  for (RegisteredComponentExtensions::iterator it =
+         component_extensions_.begin(); it != component_extensions_.end();
+         ++it) {
+    if (GenerateId(it->manifest) == extension_id) {
+      Load(*it);
+      break;
+    }
+  }
+}
+
 const Extension* ComponentLoader::Load(const ComponentExtensionInfo& info) {
   int flags = Extension::REQUIRE_KEY;
   // TODO(abarth): We should REQUIRE_MODERN_MANIFEST_VERSION once we've updated
   //               our component extensions to the new manifest version.
   if (Extension::ShouldDoStrictErrorChecking(Extension::COMPONENT))
     flags |= Extension::STRICT_ERROR_CHECKS;
   std::string error;
 
   // Get the absolute path to the extension.
   FilePath absolute_path(info.root_directory);
@@ skipping 183 matching lines @@
 void ComponentLoader::RegisterUserPrefs(PrefService* prefs) {
   prefs->RegisterStringPref(prefs::kEnterpriseWebStoreURL,
                             std::string() /* default_value */,
                             PrefService::UNSYNCABLE_PREF);
   prefs->RegisterStringPref(prefs::kEnterpriseWebStoreName,
                             std::string() /* default_value */,
                             PrefService::UNSYNCABLE_PREF);
 }
 
 }  // namespace extensions