o Cleans up canonical extension_install_ui.cc to avoid #ifdefs when feasible....

chrome/browser/views/extensions/extension_install_prompt.cc

 // Copyright (c) 2009 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.
 
 #include "app/l10n_util.h"
 #include "base/file_util.h"
 #include "base/rand_util.h"
 #include "base/string_util.h"
 #include "chrome/browser/browser_list.h"
 #include "chrome/browser/browser_window.h"
 #include "chrome/browser/extensions/extension_install_ui.h"
 #include "chrome/common/extensions/extension.h"
 #include "grit/generated_resources.h"
 #include "views/controls/image_view.h"
 #include "views/controls/label.h"
 #include "views/controls/link.h"
 #include "views/standard_layout.h"
 #include "views/view.h"
 #include "views/window/dialog_delegate.h"
 #include "views/window/window.h"
 
+#if defined(OS_WIN)
+#include "app/win_util.h"
+#endif
+
 class Profile;
 
 namespace {
 
 const int kRightColumnWidth = 270;
 const int kIconSize = 85;
 
 // Implements the extension installation prompt for Windows.
 class InstallDialogContent : public views::View, public views::DialogDelegate {
  public:
@@ skipping 95 matching lines @@
   }
 
   ExtensionInstallUI::Delegate* delegate_;
   views::ImageView* icon_;
   views::Label* heading_;
   views::Label* warning_;
 
   DISALLOW_COPY_AND_ASSIGN(InstallDialogContent);
 };
 
-} // namespace
+}  // namespace
 
 void ExtensionInstallUI::ShowExtensionInstallPrompt(
     Profile* profile, Delegate* delegate, Extension* extension, SkBitmap* icon,
     const std::wstring& warning_text) {
   Browser* browser = BrowserList::GetLastActiveWithProfile(profile);
   if (!browser) {
     delegate->ContinueInstall();
     return;
   }
 
   BrowserWindow* window = browser->window();
   if (!window) {
     delegate->AbortInstall();
     return;
   }
 
   views::Window::CreateChromeWindow(window->GetNativeHandle(), gfx::Rect(),
       new InstallDialogContent(delegate, extension, icon,
                                warning_text))->Show();
 }
+
+void ExtensionInstallUI::ShowExtensionInstallError(const std::string& error) {
+#if defined(OS_WIN)
+  win_util::MessageBox(NULL, UTF8ToWide(error),
+      l10n_util::GetString(IDS_EXTENSION_INSTALL_FAILURE_TITLE),
+      MB_OK | MB_SETFOREGROUND);
+#else
+  // TODO(port): Port this over to OS_*
+  NOTREACHED();
+#endif
+}