cc: Reland Move data to LayerTree from LayerTreeHost.

cc/proto/layer_tree.proto

 // 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.
 
 syntax = "proto2";
 
 package cc.proto;
 
+import "layer.proto";
+import "layer_selection_bound.proto";
+import "property_tree.proto";
+import "size.proto";
+
 option optimize_for = LITE_RUNTIME;
 
 message LayerTree {
   repeated int32 layers_that_should_push_properties = 1;
   optional bool in_paint_layer_contents = 2;
+  optional int32 overscroll_elasticity_layer_id = 3;
+  optional int32 page_scale_layer_id = 4;
+  optional int32 inner_viewport_scroll_layer_id = 5;
+  optional int32 outer_viewport_scroll_layer_id = 6;
+  optional bool needs_full_tree_sync = 7;
+  optional bool needs_meta_info_recomputation = 8;
+  optional int32 hud_layer_id = 9;
+  optional bool top_controls_shrink_blink_size = 10;
+  optional float top_controls_height = 11;
+  optional float top_controls_shown_ratio = 12;
+  optional float device_scale_factor = 13;
+  optional float painted_device_scale_factor = 14;
+  optional float page_scale_factor = 15;
+  optional float min_page_scale_factor = 16;
+  optional float max_page_scale_factor = 17;
+  optional Size device_viewport_size = 18;
+  optional uint32 background_color = 21; /* SkColor */
+  optional bool has_transparent_background = 22;
+  optional bool have_scroll_event_handlers = 23;
+  optional uint32 touch_start_or_move_event_listener_properties = 24;
+  optional uint32 wheel_event_listener_properties = 25;
+  optional uint32 touch_end_or_cancel_event_listener_properties = 26;
+  optional LayerNode root_layer = 27;
+  optional LayerSelection selection = 29;
+  optional PropertyTrees property_trees = 30;
 }