Make some updates to extension iconography.

chrome/browser/ui/views/extensions/extension_install_dialog_view_browsertest.cc

 // Copyright 2014 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 "chrome/browser/ui/views/extensions/extension_install_dialog_view.h"
 
 #include <utility>
 
 #include "base/macros.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 61 matching lines @@
 }
 
 std::unique_ptr<ExtensionInstallPrompt::Prompt>
 ExtensionInstallDialogViewTestBase::CreatePrompt() {
   std::unique_ptr<ExtensionInstallPrompt::Prompt> prompt(
       new ExtensionInstallPrompt::Prompt(prompt_type_));
   prompt->set_extension(extension_);
 
   std::unique_ptr<ExtensionIconManager> icon_manager(
       new ExtensionIconManager());
-  const SkBitmap icon_bitmap = icon_manager->GetIcon(extension_->id());
-  gfx::Image icon = gfx::Image::CreateFrom1xBitmap(icon_bitmap);
-  prompt->set_icon(icon);
+  prompt->set_icon(icon_manager->GetIcon(extension_->id()));
 
   return prompt;
 }
 
 class ScrollbarTest : public ExtensionInstallDialogViewTestBase {
  protected:
   ScrollbarTest();
   ~ScrollbarTest() override {}
 
   bool IsScrollbarVisible(
@@ skipping 102 matching lines @@
   {
     // Dialog is closed without the user explicitly choosing to proceed or
     // cancel.
     ExtensionInstallPromptTestHelper helper;
     views::DialogDelegateView* delegate_view = CreateAndShowPrompt(&helper);
     delegate_view->GetWidget()->Close();
     // TODO(devlin): Should this be ABORTED?
     EXPECT_EQ(ExtensionInstallPrompt::Result::USER_CANCELED, helper.result());
   }
 }