Add native permissions dialog for apps_devtools app.

chrome/browser/extensions/api/developer_private/developer_private_api.cc

Index: chrome/browser/extensions/api/developer_private/developer_private_api.cc
diff --git a/chrome/browser/extensions/api/developer_private/developer_private_api.cc b/chrome/browser/extensions/api/developer_private/developer_private_api.cc
index 471d0859335fd18564afc2ed8006ce9412d256ed..fbbf9483c37cc9a607e307c22627a2a294859922 100644
--- a/chrome/browser/extensions/api/developer_private/developer_private_api.cc
+++ b/chrome/browser/extensions/api/developer_private/developer_private_api.cc
@@ -444,8 +444,38 @@ bool DeveloperPrivateReloadFunction::RunImpl() {
   return true;
 }
 
+bool DeveloperPrivatePermissionsFunction::RunImpl() {
+  std::string extension_id;
+  EXTENSION_FUNCTION_VALIDATE(args_->GetString(0, &extension_id));
+  ExtensionService* service = profile()->GetExtensionService();
+  CHECK(!extension_id.empty());
+  ShellWindowRegistry* registry = ShellWindowRegistry::Get(profile());
+  DCHECK(registry);
+  ShellWindow* shell_window = registry->GetShellWindowForRenderViewHost(
+      render_view_host());
+  prompt_.reset(new ExtensionPermissionsPrompt(shell_window->web_contents()));
+  const Extension* extension = service->GetInstalledExtension(extension_id);

[asargent_no_longer_on_chrome, 2013/03/20 21:46:30]

You should handle the case of |extension| coming back null here - it's possible
the id is invalid, etc. 

[Gaurav, 2013/03/27 19:06:44]

Done.

+  // Released by InstallUIAbort.
+  AddRef();
+  prompt_->PermissionsDialog(this, extension);
+  return true;
+}
+
 DeveloperPrivateReloadFunction::~DeveloperPrivateReloadFunction() {}
 
+void DeveloperPrivatePermissionsFunction::InstallUIProceed() {
+  // The permissions dialog only contains a close button.
+  NOTREACHED();
+}
+
+void DeveloperPrivatePermissionsFunction::InstallUIAbort(bool user_initiated) {
+  Release();

[asargent_no_longer_on_chrome, 2013/03/20 21:46:30]

You need to call SendResponse() here, before the Release. 

[Gaurav, 2013/03/27 19:06:44]

Done.

+}
+
+DeveloperPrivatePermissionsFunction::DeveloperPrivatePermissionsFunction() {}
+
+DeveloperPrivatePermissionsFunction::~DeveloperPrivatePermissionsFunction() {}
+
 bool DeveloperPrivateRestartFunction::RunImpl() {
   std::string extension_id;
   EXTENSION_FUNCTION_VALIDATE(args_->GetString(0, &extension_id));