Adding the --load-component-extension flag.

chrome/browser/extensions/component_loader.h

Index: chrome/browser/extensions/component_loader.h
diff --git a/chrome/browser/extensions/component_loader.h b/chrome/browser/extensions/component_loader.h
index ec7726975f7ae09c1253f8025e5b8858396beb75..a2577eb25b0081c4a039e5fdf867196dd461b401 100644
--- a/chrome/browser/extensions/component_loader.h
+++ b/chrome/browser/extensions/component_loader.h
@@ -41,9 +41,14 @@ class ComponentLoader : public content::NotificationObserver {
   const Extension* Add(int manifest_resource_id,
                        const FilePath& root_directory);
 
+  // Loads a component extension from file system. Replaces previously added
+  // extension with the same ID.
+  const Extension* AddOrReplace(const FilePath& path);
+
   // Unloads a component extension and removes it from the list of component
   // extensions to be loaded.
   void Remove(const FilePath& root_directory);
+  void Remove(const std::string& id);
 
   // Adds the default component extensions.
   //
@@ -69,6 +74,10 @@ class ComponentLoader : public content::NotificationObserver {
   // Clear the list of registered extensions.
   void ClearAllRegistered();
 
+  size_t GetRegisteredExtensionsCount() const {

[Aaron Boodman, 2011/12/06 19:43:35]

Sorry I didn't notice this earlier: This should be registered_extensions_count()
style because it's just a getter. And it should be moved up to the top of the
class, right below the constructors.

I'm pointing out a lot of style issues. You should probably review:

http://google-styleguide.googlecode.com/svn/trunk/cppguide.xml

and:

http://www.chromium.org/developers/coding-style

[SeRya, 2011/12/06 22:19:37]

Done.

+    return component_extensions_.size();
+  }
+
  private:
   // Information about a registered component extension.
   struct ComponentExtensionInfo {
@@ -96,6 +105,12 @@ class ComponentLoader : public content::NotificationObserver {
   // Add the enterprise webstore extension, or reload it if already loaded.
   void AddOrReloadEnterpriseWebStore();
 
+  // Returns true if an extension with the specified id has been added.
+  bool Exists(const std::string& id) const;
+
+  // Determine the extension id.
+  static std::string GenerateId(const base::DictionaryValue* manifest);
+
   PrefService* prefs_;
   PrefService* local_state_;