Implement sidebar support for extension action popups

chrome/browser/extensions/extension_system_impl.cc

Index: chrome/browser/extensions/extension_system_impl.cc
diff --git a/chrome/browser/extensions/extension_system_impl.cc b/chrome/browser/extensions/extension_system_impl.cc
index 31a79a886f3ac8f4404dcf15cc23100e21049c29..9f41687ca0a8bc3b15ece8d9bddc74c5254ba613 100644
--- a/chrome/browser/extensions/extension_system_impl.cc
+++ b/chrome/browser/extensions/extension_system_impl.cc
@@ -26,6 +26,7 @@
 #include "chrome/browser/extensions/navigation_observer.h"
 #include "chrome/browser/extensions/shared_module_service.h"
 #include "chrome/browser/extensions/shared_user_script_master.h"
+#include "chrome/browser/extensions/sidebar_manager.h"
 #include "chrome/browser/extensions/state_store_notification_observer.h"
 #include "chrome/browser/extensions/unpacked_installer.h"
 #include "chrome/browser/profiles/profile.h"
@@ -406,6 +407,8 @@ void ExtensionSystemImpl::Shared::Init(bool extensions_enabled) {
       }
     }
   }
+
+  sidebar_manager_.reset(new SidebarManager());
 }
 
 void ExtensionSystemImpl::Shared::Shutdown() {
@@ -454,6 +457,10 @@ ContentVerifier* ExtensionSystemImpl::Shared::content_verifier() {
   return content_verifier_.get();
 }
 
+SidebarManager* ExtensionSystemImpl::Shared::sidebar_manager() {
+  return sidebar_manager_.get();
+}
+
 //
 // ExtensionSystemImpl
 //
@@ -565,4 +572,8 @@ void ExtensionSystemImpl::UnregisterExtensionWithRequestContexts(
       base::Bind(&InfoMap::RemoveExtension, info_map(), extension_id, reason));
 }
 
+SidebarManager* ExtensionSystemImpl::sidebar_manager() {
+  return shared_->sidebar_manager();
+}
+
 }  // namespace extensions