CC Animation: Expose TargetProperty enum to be aliased in Blink Platform.

cc/animation/animation_target_property.cc

Index: cc/animation/animation_target_property.cc
diff --git a/cc/animation/animation_target_property.cc b/cc/animation/animation_target_property.cc
new file mode 100644
index 0000000000000000000000000000000000000000..22b8b2d27a0b5e00d0a025d93c832e161751b425
--- /dev/null
+++ b/cc/animation/animation_target_property.cc
@@ -0,0 +1,30 @@
+// Copyright (c) 2016 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 "cc/animation/animation_target_property.h"
+
+#include "base/macros.h"
+
+namespace cc {
+
+namespace {
+
+// This should match the TargetProperty enum.
+static const char* const s_targetPropertyNames[] = {
+    "TRANSFORM", "OPACITY", "FILTER", "SCROLL_OFFSET", "BACKGROUND_COLOR"};
+
+static_assert(static_cast<int>(AnimationTargetProperty::LAST_TARGET_PROPERTY) +
+                      1 ==
+                  arraysize(s_targetPropertyNames),
+              "TargetPropertyEnumSize should equal the number of elements in "
+              "s_targetPropertyNames");
+
+}  // namespace
+
+const char* GetAnimationTargetPropertyName(
+    AnimationTargetProperty::Enum property) {
+  return s_targetPropertyNames[property];
+}
+
+}  // namespace cc