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/shared/common/client_app.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 "tests/shared/common/client_app.h"
+
+#include "include/cef_command_line.h"
+
+namespace client {
+
+namespace {
+
+// These flags must match the Chromium values.
+const char kProcessType[] = "type";
+const char kRendererProcess[] = "renderer";
+#if defined(OS_LINUX)
+const char kZygoteProcess[] = "zygote";
+#endif
+
+}  // namespace
+
+
+ClientApp::ClientApp() {
+}
+
+// static
+ClientApp::ProcessType ClientApp::GetProcessType(
+    CefRefPtr<CefCommandLine> command_line) {
+  // The command-line flag won't be specified for the browser process.
+  if (!command_line->HasSwitch(kProcessType))
+    return BrowserProcess;
+
+  const std::string& process_type = command_line->GetSwitchValue(kProcessType);
+  if (process_type == kRendererProcess)
+    return RendererProcess;
+#if defined(OS_LINUX)
+  else if (process_type == kZygoteProcess)
+    return ZygoteProcess;
+#endif
+
+  return OtherProcess;
+}
+
+void ClientApp::OnRegisterCustomSchemes(
+    CefRefPtr<CefSchemeRegistrar> registrar) {
+  RegisterCustomSchemes(registrar, cookieable_schemes_);
+}
+
+}  // namespace client