ChromeOS: Support opening files with apps from the downloads page.

chrome/browser/chromeos/extensions/file_manager/file_handler_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/browser/chromeos/extensions/file_manager/file_handler_util.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/i18n/case_conversion.h"
 #include "base/json/json_writer.h"
@@ skipping 80 matching lines @@
     extensions::ExtensionSystem::Get(profile)->process_manager();
 
   SiteInstance* site_instance = manager->GetSiteInstanceForURL(extension_url);
   if (!site_instance || !site_instance->HasProcess())
     return -1;
   content::RenderProcessHost* process = site_instance->GetProcess();
 
   return process->GetID();
 }
 
-// Returns true if the task should be used as a fallback. Such tasks are
-// Files.app's internal handlers as well as quick office extensions.
-bool IsFallbackTask(const FileBrowserHandler* task) {
-  return (task->extension_id() == kFileBrowserDomain ||
-          task->extension_id() ==
-              extension_misc::kQuickOfficeComponentExtensionId ||
-          task->extension_id() == extension_misc::kQuickOfficeDevExtensionId ||
-          task->extension_id() == extension_misc::kQuickOfficeExtensionId);
-}
-
 const FileBrowserHandler* FindFileBrowserHandler(const Extension* extension,
                                                  const std::string& action_id) {
   FileBrowserHandler::List* handler_list =
       FileBrowserHandler::GetHandlers(extension);
   for (FileBrowserHandler::List::const_iterator action_iter =
            handler_list->begin();
        action_iter != handler_list->end();
        ++action_iter) {
     if (action_iter->get()->id() == action_id)
       return action_iter->get();
@@ skipping 58 matching lines @@
         continue;
 
       results->push_back(action_iter->get());
     }
   }
   return true;
 }
 
 }  // namespace
 
+bool IsFallbackTask(const FileBrowserHandler* task) {
+  return (task->extension_id() == kFileBrowserDomain ||
+          task->extension_id() ==
+              extension_misc::kQuickOfficeComponentExtensionId ||
+          task->extension_id() == extension_misc::kQuickOfficeDevExtensionId ||
+          task->extension_id() == extension_misc::kQuickOfficeExtensionId);
+}
+
 void UpdateDefaultTask(Profile* profile,
                        const std::string& task_id,
                        const std::set<std::string>& suffixes,
                        const std::set<std::string>& mime_types) {
   if (!profile || !profile->GetPrefs())
     return;
 
   if (!mime_types.empty()) {
     DictionaryPrefUpdate mime_type_pref(profile->GetPrefs(),
                                         prefs::kDefaultTasksByMimeType);
@@ skipping 773 matching lines @@
     extensions::LaunchPlatformAppWithFileHandler(profile(), GetExtension(),
         action_id_, file_urls[i].path());
   }
 
   if (!done.is_null())
     done.Run(true);
   return true;
 }
 
 } // namespace file_handler_util