cc: Fix draw transform computation for non-drawn layers

cc/trees/layer_tree_impl.h

 // Copyright 2012 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_TREES_LAYER_TREE_IMPL_H_
 #define CC_TREES_LAYER_TREE_IMPL_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 205 matching lines @@
   }
   const SyncedTopControls* top_controls_shown_ratio() const {
     return top_controls_shown_ratio_.get();
   }
 
   // Updates draw properties and render surface layer list, as well as tile
   // priorities. Returns false if it was unable to update.  Updating lcd
   // text may cause invalidations, so should only be done after a commit.
   bool UpdateDrawProperties(bool update_lcd_text);
   void BuildPropertyTreesForTesting();
+  void IncrementRenderSurfaceListIdForTesting();

[ajuma, 2015/11/30 17:55:52]

In several unit tests, the render surface list id passed to CDP wasn't coming
from LayerTreeImpl, so LayerImpl::IsDrawnRenderSurfaceLayerListMember was
returning the wrong thing (meaning LayerImpl::DrawTransform also did the wrong
thing). I've added this method so tests can use LayerTreeImpl's id rather than
creating their own.

 
   void set_needs_update_draw_properties() {
     needs_update_draw_properties_ = true;
   }
   bool needs_update_draw_properties() const {
     return needs_update_draw_properties_;
   }
 
   void set_needs_full_tree_sync(bool needs) { needs_full_tree_sync_ = needs; }
   bool needs_full_tree_sync() const { return needs_full_tree_sync_; }
@@ skipping 264 matching lines @@
 
   scoped_ptr<PendingPageScaleAnimation> pending_page_scale_animation_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(LayerTreeImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_IMPL_H_