app_list: Drive app integration.

chrome/browser/extensions/crx_installer.h

Index: chrome/browser/extensions/crx_installer.h
diff --git a/chrome/browser/extensions/crx_installer.h b/chrome/browser/extensions/crx_installer.h
index 20b2d20957d2af800c6a126ad1750c4e118b3ff5..55f681f477c6f9e663e91360c8e16b78e31dbcc4 100644
--- a/chrome/browser/extensions/crx_installer.h
+++ b/chrome/browser/extensions/crx_installer.h
@@ -196,6 +196,8 @@ class CrxInstaller
 
   const Extension* extension() { return installer_.extension().get(); }
 
+  const std::string& current_version() const { return current_version_; }
+
  private:
   friend class ::ExtensionServiceTest;
   friend class ExtensionUpdaterTest;
@@ -210,8 +212,7 @@ class CrxInstaller
   void ConvertUserScriptOnFileThread();
 
   // Converts the source web app to an extension.
-  void ConvertWebAppOnFileThread(const WebApplicationInfo& web_app,
-                                 const base::FilePath& install_directory);
+  void ConvertWebAppOnFileThread(const WebApplicationInfo& web_app);
 
   // Called after OnUnpackSuccess as a last check to see whether the install
   // should complete.
@@ -272,7 +273,7 @@ class CrxInstaller
   GURL download_url_;
 
   // The directory extensions are installed to.
-  base::FilePath install_directory_;
+  const base::FilePath install_directory_;
 
   // The location the installation came from (bundled with Chromium, registry,
   // manual install, etc). This metadata is saved with the installation if