Add extensions code to use common updater in components/update_client/

extensions/shell/browser/shell_browser_main_parts.cc

Index: extensions/shell/browser/shell_browser_main_parts.cc
diff --git a/extensions/shell/browser/shell_browser_main_parts.cc b/extensions/shell/browser/shell_browser_main_parts.cc
index 073dacb5afde651afdf34b57b2d87dbd2d9bed89..015367900066bb0704839797d45fecc84e1b0b2d 100644
--- a/extensions/shell/browser/shell_browser_main_parts.cc
+++ b/extensions/shell/browser/shell_browser_main_parts.cc
@@ -73,13 +73,6 @@ using content::BrowserThread;
 
 namespace extensions {
 
-namespace {
-
-void CrxInstallComplete(bool success) {
-  VLOG(1) << "CRX download complete. Success: " << success;
-}
-}
-
 ShellBrowserMainParts::ShellBrowserMainParts(
     const content::MainFunctionParams& parameters,
     ShellBrowserMainDelegate* browser_main_delegate)
@@ -211,17 +204,6 @@ void ShellBrowserMainParts::PreMainMessageLoopRun() {
       base::Bind(nacl::NaClProcessHost::EarlyStartup));
 #endif
 
-  // TODO(rockot): Remove this temporary hack test.
-  std::string install_crx_id =
-      cmd->GetSwitchValueASCII(switches::kAppShellInstallCrx);
-  if (install_crx_id.size() != 0) {
-    CHECK(install_crx_id.size() == 32)
-        << "Extension ID must be exactly 32 characters long.";
-    UpdateService* update_service = UpdateService::Get(browser_context_.get());
-    update_service->DownloadAndInstall(install_crx_id,
-                                       base::Bind(CrxInstallComplete));
-  }
-
   devtools_http_handler_.reset(
       content::ShellDevToolsManagerDelegate::CreateHttpHandler(
           browser_context_.get()));