[Extensions] Migrate ExtensionInstallPrompt::Delegate to be a callback

chrome/browser/ui/cocoa/extensions/windowed_install_dialog_controller.mm

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "chrome/browser/ui/cocoa/extensions/windowed_install_dialog_controller.h"
 
+#import "base/callback_helpers.h"
 #import "base/mac/sdk_forward_declarations.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/sys_string_conversions.h"
 #include "chrome/browser/extensions/extension_install_prompt_show_params.h"
 #include "chrome/browser/profiles/profile.h"
 #import "chrome/browser/ui/cocoa/extensions/extension_install_view_controller.h"
 #include "content/public/browser/web_contents.h"
 #include "ui/base/cocoa/window_size_constants.h"
 
 @interface WindowedInstallController
     : NSWindowController<NSWindowDelegate> {
  @private
   base::scoped_nsobject<ExtensionInstallViewController> installViewController_;
   WindowedInstallDialogController* dialogController_;  // Weak. Owns us.
 }
 
 @property(readonly, nonatomic) ExtensionInstallViewController* viewController;
 
 - (id)initWithProfile:(Profile*)profile
             navigator:(content::PageNavigator*)navigator
              delegate:(WindowedInstallDialogController*)delegate
                prompt:(scoped_ptr<ExtensionInstallPrompt::Prompt>)prompt;
 
 @end
 
 WindowedInstallDialogController::WindowedInstallDialogController(
     ExtensionInstallPromptShowParams* show_params,
-    ExtensionInstallPrompt::Delegate* delegate,
+    const ExtensionInstallPrompt::DoneCallback& done_callback,
     scoped_ptr<ExtensionInstallPrompt::Prompt> prompt)
-    : delegate_(delegate) {
+    : done_callback_(done_callback) {
   install_controller_.reset([[WindowedInstallController alloc]
       initWithProfile:show_params->profile()
             navigator:show_params->GetParentWebContents()
              delegate:this
                prompt:prompt.Pass()]);
   [[install_controller_ window] makeKeyAndOrderFront:nil];
 }
 
 WindowedInstallDialogController::~WindowedInstallDialogController() {
   DCHECK(!install_controller_);
-  DCHECK(!delegate_);
+  DCHECK(done_callback_.is_null());
 }
 
 void WindowedInstallDialogController::OnWindowClosing() {
   install_controller_.reset();
-  if (delegate_) {
-    delegate_->InstallUIAbort(false);
-    delegate_ = NULL;
+  if (!done_callback_.is_null()) {
+    base::ResetAndReturn(&done_callback_).Run(
+        ExtensionInstallPrompt::Result::ABORTED);
   }
   base::MessageLoop::current()->DeleteSoon(FROM_HERE, this);
 }
 
 ExtensionInstallViewController*
 WindowedInstallDialogController::GetViewController() {
   return [install_controller_ viewController];
 }
 
-void WindowedInstallDialogController::InstallUIProceed() {
-  delegate_->InstallUIProceed();
-  delegate_ = NULL;
+void WindowedInstallDialogController::OnOkButtonClicked() {
+  base::ResetAndReturn(&done_callback_).Run(
+      ExtensionInstallPrompt::Result::ACCEPTED);
   [[install_controller_ window] close];
 }
 
-void WindowedInstallDialogController::InstallUIAbort(bool user_initiated) {
-  delegate_->InstallUIAbort(user_initiated);
-  delegate_ = NULL;
+void WindowedInstallDialogController::OnCancelButtonClicked() {
+  base::ResetAndReturn(&done_callback_).Run(
+      ExtensionInstallPrompt::Result::USER_CANCELED);
   [[install_controller_ window] close];
 }
 
+void WindowedInstallDialogController::OnStoreLinkClicked() {
+  base::ResetAndReturn(&done_callback_).Run(
+      ExtensionInstallPrompt::Result::USER_CANCELED);
+  [[install_controller_ window] close];
+}
+
 @implementation WindowedInstallController
 
 - (id)initWithProfile:(Profile*)profile
             navigator:(content::PageNavigator*)navigator
              delegate:(WindowedInstallDialogController*)delegate
                prompt:(scoped_ptr<ExtensionInstallPrompt::Prompt>)prompt {
   base::scoped_nsobject<NSWindow> controlledPanel(
       [[NSPanel alloc] initWithContentRect:ui::kWindowSizeDeterminedLater
                                  styleMask:NSTitledWindowMask
                                    backing:NSBackingStoreBuffered
@@ skipping 30 matching lines @@
 - (ExtensionInstallViewController*)viewController {
   return installViewController_;
 }
 
 - (void)windowWillClose:(NSNotification*)notification {
   [[self window] setDelegate:nil];
   dialogController_->OnWindowClosing();
 }
 
 @end