| Index: chrome/common/extensions/extension_messages.h | 
| diff --git a/chrome/common/extensions/extension_messages.h b/chrome/common/extensions/extension_messages.h | 
| index df009b4fde5483fc3c7dc6f1355f4ed4a99cca3c..f09841a7b6e456a3e6d4fb42724d08ba1257b618 100644 | 
| --- a/chrome/common/extensions/extension_messages.h | 
| +++ b/chrome/common/extensions/extension_messages.h | 
| @@ -317,3 +317,8 @@ IPC_MESSAGE_ROUTED1(ExtensionHostMsg_InstallApplication, | 
| // Sent by the renderer to implement chrome.webstore.install(). | 
| IPC_MESSAGE_ROUTED1(ExtensionHostMsg_InlineWebstoreInstall, | 
| std::string /* Web Store item ID */) | 
| + | 
| +// Send to renderer once the installation mentioned above is complete. | 
| +IPC_MESSAGE_ROUTED2(ExtensionMsg_InlineWebstoreInstallResponse, | 
| +                    bool /* whether the install was successful */, | 
| +                    std::string /* error */) | 
|  |