cc: Make property trees support resourceless draw mode

cc/trees/property_tree.cc

 // Copyright 2014 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 <set>
 #include <vector>
 
 #include "base/logging.h"
 #include "cc/base/math_util.h"
 #include "cc/trees/property_tree.h"
@@ skipping 88 matching lines @@
       transform_origin.z());
 }
 
 ClipNodeData::ClipNodeData()
     : transform_id(-1),
       target_id(-1),
       applies_local_clip(true),
       layer_clipping_uses_only_local_clip(false),
       target_is_clipped(false),
       layers_are_clipped(false),
+      layers_are_clipped_when_surfaces_disabled(false),
       resets_clip(false) {}
 
 EffectNodeData::EffectNodeData()
     : opacity(1.f),
       screen_space_opacity(1.f),
       has_render_surface(false),
       transform_id(0),
       clip_id(0) {}
 
 void TransformTree::clear() {
@@ skipping 498 matching lines @@
   node->data.clip = viewport_rect;
   set_needs_update(true);
 }
 
 gfx::RectF ClipTree::ViewportClip() {
   const unsigned long min_size = 1;
   DCHECK_GT(size(), min_size);
   return Node(1)->data.clip;
 }
 
-PropertyTrees::PropertyTrees() : needs_rebuild(true), sequence_number(0) {
-}
+PropertyTrees::PropertyTrees()
+    : needs_rebuild(true),
+      non_root_surfaces_enabled(true),
+      sequence_number(0) {}
 
 }  // namespace cc