Adding code. Closes #0.

test/hwcaps_for_testing.cc

@@ -0,0 +1,32 @@
+// Copyright 2017 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "hwcaps_for_testing.h"
+
+namespace cpu_features {
+
+namespace {
+static auto* const g_hardware_capabilities = new HardwareCapabilities();
+}  // namespace
+
+void SetHardwareCapabilities(uint32_t hwcaps, uint32_t hwcaps2) {
+  g_hardware_capabilities->hwcaps = hwcaps;
+  g_hardware_capabilities->hwcaps2 = hwcaps2;
+}
+
+HardwareCapabilities GetHardwareCapabilities(void) {
+  return *g_hardware_capabilities;
+}
+
+}  // namespace cpu_features