Add platform_app flag to manifest.

chrome/common/extensions/extension_constants.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/common/extensions/extension_constants.h"
 
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/string_util.h"
@@ skipping 57 matching lines @@
 const char* kPageActionDefaultIcon = "default_icon";
 const char* kPageActionDefaultPopup = "default_popup";
 const char* kPageActionDefaultTitle = "default_title";
 const char* kPageActionIcons = "icons";
 const char* kPageActionId = "id";
 const char* kPageActionPopup = "popup";
 const char* kPageActionPopupHeight = "height";
 const char* kPageActionPopupPath = "path";
 const char* kPageActions = "page_actions";
 const char* kPermissions = "permissions";
+const char* kPlatformApp = "platform_app";
 const char* kPlugins = "plugins";
 const char* kPluginsPath = "path";
 const char* kPluginsPublic = "public";
 const char* kPublicKey = "key";
 const char* kRequirements = "requirements";
 const char* kRunAt = "run_at";
 const char* kShiftKey = "shiftKey";
 const char* kShortcutKey = "shortcutKey";
 const char* kSidebar = "sidebar";
 const char* kSidebarDefaultIcon = "default_icon";
@@ skipping 159 matching lines @@
 const char* kInvalidIsolationValue =
     "Invalid value for 'app.isolation[*]'.";
 const char* kInvalidJs =
     "Invalid value for 'content_scripts[*].js[*]'.";
 const char* kInvalidJsList =
     "Required value 'content_scripts[*].js' is invalid.";
 const char* kInvalidKey =
     "Value 'key' is missing or invalid.";
 const char* kInvalidLaunchContainer =
     "Invalid value for 'app.launch.container'.";
+const char* kInvalidLaunchContainerForPlatform =
+    "platform_app requires 'app.launch.container' == 'panel'.";
 const char* kInvalidLaunchHeight =
     "Invalid value for 'app.launch.height'.";
 const char* kInvalidLaunchHeightContainer =
     "Invalid container type for 'app.launch.height'.";
 const char* kInvalidLaunchLocalPath =
     "Invalid value for 'app.launch.local_path'.";
 const char* kInvalidLaunchWebURL =
     "Invalid value for 'app.launch.web_url'.";
 const char* kInvalidLaunchWidth =
     "Invalid value for 'app.launch.width'.";
@@ skipping 213 matching lines @@
 const char* kCloudPrintAppId = "mfehgcgbbipciphmccgaenjidiccnmng";
 const char* kAppsPromoHistogram = "Extensions.AppsPromo";
 const char* kAppLaunchHistogram = "Extensions.AppLaunch";
 #if defined(OS_CHROMEOS)
 const char* kAccessExtensionPath =
     "/usr/share/chromeos-assets/accessibility/extensions";
 const char* kChromeVoxDirectoryName = "access_chromevox";
 #endif
 
 }