Added comprehensive tests for views::Border.

ui/views/BUILD.gn

 # 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.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 
 gypi_values = exec_script("//build/gypi_to_gn.py",
                           [ rebase_path("views.gyp") ],
@@ skipping 178 matching lines @@
 test("views_unittests") {
   sources = gypi_values.views_unittests_sources
 
   deps = [
     ":test_support",
     "//base",
     "//base:i18n",
     "//base/allocator",
     "//base/test:test_support",
     "//skia",
+    "//testing/gmock",
     "//testing/gtest",
     "//third_party/icu",
     "//ui/accessibility",
     "//ui/base",
     "//ui/base:test_support",
     "//ui/base/ime",
     "//ui/compositor:test_support",
     "//ui/events:events_base",
     "//ui/events:test_support",
     "//ui/events/platform",
@@ skipping 93 matching lines @@
       "//skia",
       "//testing/gtest",
       "//ui/base:test_support",
       "//ui/compositor",
       "//ui/resources",
       "//ui/resources:ui_test_pak",
       "//ui/strings",
     ]
   }
 }