Introduce background.scripts feature for extension manifests.

chrome/common/extensions/extension.h

 // 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.
 
 #ifndef CHROME_COMMON_EXTENSIONS_EXTENSION_H_
 #define CHROME_COMMON_EXTENSIONS_EXTENSION_H_
 #pragma once
 
 #include <map>
 #include <set>
@@ skipping 508 matching lines @@
   const FileBrowserHandlerList* file_browser_handlers() const {
     return file_browser_handlers_.get();
   }
   const std::vector<PluginInfo>& plugins() const { return plugins_; }
   const std::vector<NaClModuleInfo>& nacl_modules() const {
     return nacl_modules_;
   }
   const std::vector<InputComponentInfo>& input_components() const {
     return input_components_;
   }
-  const GURL& background_url() const { return background_url_; }
+  bool has_background_page() const {
+    return background_url_.is_valid() || !background_scripts_.empty();
+  }
+  const std::vector<std::string>& background_scripts() const {
+    return background_scripts_;
+  }
   const GURL& options_url() const { return options_url_; }
   const GURL& devtools_url() const { return devtools_url_; }
   const ExtensionPermissionSet* optional_permission_set() const {
     return optional_permission_set_.get();
   }
   const ExtensionPermissionSet* required_permission_set() const {
     return required_permission_set_.get();
   }
   const GURL& update_url() const { return update_url_; }
   const ExtensionIconSet& icons() const { return icons_; }
@@ skipping 41 matching lines @@
 
   // Theme-related.
   bool is_theme() const { return manifest()->IsTheme(); }
   base::DictionaryValue* GetThemeImages() const { return theme_images_.get(); }
   base::DictionaryValue* GetThemeColors() const {return theme_colors_.get(); }
   base::DictionaryValue* GetThemeTints() const { return theme_tints_.get(); }
   base::DictionaryValue* GetThemeDisplayProperties() const {
     return theme_display_properties_.get();
   }
 
+  GURL GetBackgroundURL() const;
+
  private:
   friend class base::RefCountedThreadSafe<Extension>;
 
   // We keep a cache of images loaded from extension resources based on their
   // path and a string representation of a size that may have been used to
   // scale it (or the empty string if the image is at its original size).
   typedef std::pair<FilePath, std::string> ImageCacheKey;
   typedef std::map<ImageCacheKey, SkBitmap> ImageCache;
 
   class RuntimeData {
@@ skipping 56 matching lines @@
                   const char* value_error,
                   string16* error);
   bool LoadLaunchContainer(const extensions::Manifest* manifest,
                            string16* error);
   bool LoadLaunchURL(const extensions::Manifest* manifest,
                      string16* error);
   bool LoadAppIsolation(const extensions::Manifest* manifest,
                         string16* error);
   bool LoadWebIntentServices(const extensions::Manifest* manifest,
                              string16* error);
+  bool LoadBackgroundScripts(const extensions::Manifest* manifest,
+                             string16* error);
   bool LoadBackgroundPage(const extensions::Manifest* manifest,
                           const ExtensionAPIPermissionSet& api_permissions,
                           string16* error);
 
   // Helper method to load an ExtensionAction from the page_action or
   // browser_action entries in the manifest.
   ExtensionAction* LoadExtensionActionHelper(
       const base::DictionaryValue* extension_action, string16* error);
 
   // Helper method to load an FileBrowserHandlerList from the manifest.
@@ skipping 112 matching lines @@
   // Optional list of input components and associated properties.
   std::vector<InputComponentInfo> input_components_;
 
   // Optional list of web accessible extension resources.
   base::hash_set<std::string> web_accessible_resources_;
 
   // Optional URL to a master page of which a single instance should be always
   // loaded in the background.
   GURL background_url_;
 
+  // Optional list of scripts to use to generate a background page. If this is
+  // present, background_url_ will be empty and generated by GetBackgroundURL().
+  std::vector<std::string> background_scripts_;
+
   // Optional URL to a page for setting options/preferences.
   GURL options_url_;
 
   // Optional URL to a devtools extension page.
   GURL devtools_url_;
 
   // The public key used to sign the contents of the crx package.
   std::string public_key_;
 
   // A map of resource id's to relative file paths.
@@ skipping 125 matching lines @@
   // only contain the removed permissions.
   const ExtensionPermissionSet* permissions;
 
   UpdatedExtensionPermissionsInfo(
       const Extension* extension,
       const ExtensionPermissionSet* permissions,
       Reason reason);
 };
 
 #endif  // CHROME_COMMON_EXTENSIONS_EXTENSION_H_