Update old syntax for action default_icon to populate 19 and 38px icons

chrome/common/extensions/api/extension_action/browser_action_manifest_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/api/extension_action/action_info.h"
 #include "chrome/common/extensions/manifest_tests/extension_manifest_test.h"
 #include "extensions/common/error_utils.h"
 #include "extensions/common/extension_builder.h"
 #include "extensions/common/extension_icon_set.h"
 #include "extensions/common/manifest_constants.h"
@@ skipping 42 matching lines @@
 
   ASSERT_TRUE(extension.get());
   const ActionInfo* browser_action_info =
       ActionInfo::GetBrowserActionInfo(extension.get());
   ASSERT_TRUE(browser_action_info);
   ASSERT_FALSE(browser_action_info->default_icon.empty());
 
   const ExtensionIconSet& icons = browser_action_info->default_icon;
 
   EXPECT_EQ(1u, icons.map().size());
-  EXPECT_EQ("icon.png", icons.Get(19, ExtensionIconSet::MATCH_EXACTLY));
+  EXPECT_EQ("icon.png", icons.Get(38, ExtensionIconSet::MATCH_EXACTLY));
 }
 
 TEST_F(BrowserActionManifestTest,
        BrowserActionManifestIcons_DictDefaultIcon) {
   scoped_refptr<const Extension> extension =
       ExtensionBuilder()
       .SetManifest(DictionaryBuilder()
                    .Set("name", "Dictionary default icon")
                    .Set("version", "1.0.0")
                    .Set("manifest_version", 2)
@@ skipping 30 matching lines @@
                    .Set("24", "icon24.png").Set("38", "icon38.png"))).Build();
 
   base::string16 error = ErrorUtils::FormatErrorMessageUTF16(
       errors::kInvalidIconPath, "19");
   LoadAndExpectError(Manifest(manifest_value.get(), "Invalid default icon"),
                      errors::kInvalidIconPath);
 }
 
 }  // namespace
 }  // namespace extensions