Move cc::LayerSettings to cc/layers/layer_settings.h.

cc/layers/layer_proto_converter_unittest.cc

 // Copyright 2015 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/layers/layer_proto_converter.h"
 
 #include "cc/layers/layer.h"
+#include "cc/layers/layer_settings.h"
 #include "cc/proto/layer.pb.h"
 #include "cc/trees/layer_tree_settings.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace cc {
 
 TEST(LayerProtoConverterTest, TestKeepingRoot) {
   /* Test deserialization of a tree that looks like:
          root
         /   \
@@ skipping 283 matching lines @@
   EXPECT_FALSE(a->descendant_needs_push_properties());
 
   EXPECT_FALSE(b->needs_push_properties());
   EXPECT_TRUE(b->descendant_needs_push_properties());
 
   EXPECT_TRUE(c->needs_push_properties());
   EXPECT_FALSE(c->descendant_needs_push_properties());
 }
 
 }  // namespace cc