Remove --disable-app-shims.

App shims have been enabled by default for 3 milestones
(since r242711).

BUG=350161

Review URL: https://codereview.chromium.org/298953002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@272786 0039d316-1c4b-4281-b951-d872f2087c98
void AppLauncherHandler::ExtensionEnableFlowFinished() {
  DCHECK_EQ(extension_id_prompting_, extension_enable_flow_->extension_id());

  base::StringValue app_id(extension_id_prompting_);
  web_ui()->CallJavascriptFunction("ntp.launchAppAfterEnable", app_id);

  extension_enable_flow_.reset();
  extension_id_prompting_ = "";
}

void AppLauncherHandler::ExtensionEnableFlowFinished() {
  DCHECK_EQ(extension_id_prompting_, extension_enable_flow_->extension_id());

  base::StringValue app_id(extension_id_prompting_);
  web_ui()->CallJavascriptFunction("ntp.launchAppAfterEnable", app_id);

  extension_enable_flow_.reset();
  extension_id_prompting_ = "";
}
