Generalize ExtensionIconSet to store icon paths for custom size sets

chrome/common/extensions/extension_icon_set_unittest.cc

 // Copyright (c) 2012 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/common/extensions/extension_icon_set.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 
+namespace {
+
 TEST(ExtensionIconSet, Basic) {
   ExtensionIconSet icons;
   EXPECT_EQ("", icons.Get(ExtensionIconSet::EXTENSION_ICON_LARGE,
       ExtensionIconSet::MATCH_EXACTLY));
   EXPECT_EQ("", icons.Get(ExtensionIconSet::EXTENSION_ICON_LARGE,
       ExtensionIconSet::MATCH_BIGGER));
   EXPECT_EQ("", icons.Get(ExtensionIconSet::EXTENSION_ICON_LARGE,
       ExtensionIconSet::MATCH_SMALLER));
   EXPECT_TRUE(icons.map().empty());
 
@@ skipping 60 matching lines @@
             icons.GetIconSizeFromPath("bar"));
   EXPECT_EQ(ExtensionIconSet::EXTENSION_ICON_INVALID,
             icons.GetIconSizeFromPath("baz"));
   EXPECT_EQ(ExtensionIconSet::EXTENSION_ICON_INVALID,
             icons.GetIconSizeFromPath(""));
 
   icons.Clear();
   EXPECT_EQ(ExtensionIconSet::EXTENSION_ICON_INVALID,
             icons.GetIconSizeFromPath("foo"));
 }
+
+}  // namespace