Fix use_image_texture_target inconsistencies

cc/test/test_image_texture_targets_map.h

Index: cc/test/test_image_texture_targets_map.h
diff --git a/cc/test/test_image_texture_targets_map.h b/cc/test/test_image_texture_targets_map.h
new file mode 100644
index 0000000000000000000000000000000000000000..4303bd76e81ca81457d930fbab5d6a9eeb737b6a
--- /dev/null
+++ b/cc/test/test_image_texture_targets_map.h
@@ -0,0 +1,18 @@
+// Copyright 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.
+
+#ifndef CC_TEST_TEST_IMAGE_TEXTURE_TARGETS_MAP_H_
+#define CC_TEST_TEST_IMAGE_TEXTURE_TARGETS_MAP_H_
+
+#include "cc/trees/layer_tree_settings.h"
+
+namespace cc {
+
+// Returns a default-initialized ImageTextureTargetsMap where every entry maps
+// to GL_TEXTURE_2D.
+RendererSettings::ImageTextureTargetsMap TestImageTextureTargetsMap();
+
+}  // namespace cc
+
+#endif  // CC_TEST_TEST_IMAGE_TEXTURE_TARGETS_MAP_H_