Add unittests target to the binary distribution (issue #1632)

- Move all tests from the top-level directory to tests/.
- Move files shared by cefclient and unittests to tests/shared/.
- Add a fused (single header/source file) version of gtest in
  tests/gtest/ with associated CMake configuration.
- Test-only headers are now exposed in include/test/. Unit test
  targets must define UNIT_TEST in order to access them.
- Replace usage of USING_CEF_SHARED with WRAPPING_CEF_SHARED for
  clarity (only the libcef_dll_wrapper target should define it).
- Remove the RENAME_DIRECTORY CMake macro which is no longer used.
- Remove C++11 usage from unittests sources for compatibility with
  the binary distribution configuration.
- Windows: Fix build errors due to chrome_elf.dll and imm32.lib
  missing from the CMake configuration.

tests/cefclient/browser/resource_util_win_idmap.cc

@@ -0,0 +1,49 @@
+// Copyright (c) 2013 The Chromium Embedded Framework 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 <cstring>
+
+#include "tests/cefclient/browser/resource.h"
+
+namespace client {
+
+int GetResourceId(const char* resource_name) {
+  // Map of resource labels to BINARY id values.
+  static struct _resource_map {
+    char* name;
+    int id;
+  } resource_map[] = {
+    {"binding.html", IDS_BINDING_HTML},
+    {"dialogs.html", IDS_DIALOGS_HTML},
+    {"draggable.html", IDS_DRAGGABLE_HTML},
+    {"drm.html", IDS_DRM_HTML},
+    {"logo.png", IDS_LOGO_PNG},
+    {"localstorage.html", IDS_LOCALSTORAGE_HTML},
+    {"menu_icon.1x.png", IDS_MENU_ICON_1X_PNG},
+    {"menu_icon.2x.png", IDS_MENU_ICON_2X_PNG},
+    {"osr_test.html", IDS_OSRTEST_HTML},
+    {"other_tests.html", IDS_OTHER_TESTS_HTML},
+    {"pdf.html", IDS_PDF_HTML},
+    {"pdf.pdf", IDS_PDF_PDF},
+    {"performance.html", IDS_PERFORMANCE_HTML},
+    {"performance2.html", IDS_PERFORMANCE2_HTML},
+    {"preferences.html", IDS_PREFERENCES_HTML},
+    {"response_filter.html", IDS_RESPONSE_FILTER_HTML},
+    {"transparency.html", IDS_TRANSPARENCY_HTML},
+    {"urlrequest.html", IDS_URLREQUEST_HTML},
+    {"window.html", IDS_WINDOW_HTML},
+    {"window_icon.1x.png", IDS_WINDOW_ICON_1X_PNG},
+    {"window_icon.2x.png", IDS_WINDOW_ICON_2X_PNG},
+    {"xmlhttprequest.html", IDS_XMLHTTPREQUEST_HTML},
+  };
+
+  for (int i = 0; i < sizeof(resource_map)/sizeof(_resource_map); ++i) {
+    if (!strcmp(resource_map[i].name, resource_name))
+      return resource_map[i].id;
+  }
+  
+  return 0;
+}
+
+}  // namespace client