Consolidate manifest handler registration.

chrome/common/extensions/manifest_tests/extension_manifests_icons_unittest.cc

 // Copyright (c) 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.
 
 #include "base/memory/linked_ptr.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_constants.h"
 #include "chrome/common/extensions/extension_icon_set.h"
 #include "chrome/common/extensions/manifest_handlers/icons_handler.h"
 #include "chrome/common/extensions/manifest_tests/extension_manifest_test.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace extensions {
 
 class IconsManifestTest : public ExtensionManifestTest {
- protected:
-  virtual void SetUp() OVERRIDE {
-    ExtensionManifestTest::SetUp();
-    (new IconsHandler)->Register();
-  }
 };
 
 TEST_F(IconsManifestTest, NormalizeIconPaths) {
   scoped_refptr<extensions::Extension> extension(
       LoadAndExpectSuccess("normalize_icon_paths.json"));
   const ExtensionIconSet& icons = IconsInfo::GetIcons(extension);
 
   EXPECT_EQ("16.png", icons.Get(extension_misc::EXTENSION_ICON_BITTY,
                                 ExtensionIconSet::MATCH_EXACTLY));
   EXPECT_EQ("48.png", icons.Get(extension_misc::EXTENSION_ICON_MEDIUM,
@@ skipping 22 matching lines @@
                                 ExtensionIconSet::MATCH_EXACTLY));
   EXPECT_EQ("128.png", icons.Get(extension_misc::EXTENSION_ICON_LARGE,
                                  ExtensionIconSet::MATCH_EXACTLY));
   EXPECT_EQ("256.png", icons.Get(extension_misc::EXTENSION_ICON_EXTRA_LARGE,
                                  ExtensionIconSet::MATCH_EXACTLY));
   EXPECT_EQ("512.png", icons.Get(extension_misc::EXTENSION_ICON_GIGANTOR,
                                  ExtensionIconSet::MATCH_EXACTLY));
 }
 
 }  // namespace extensions