SurfaceAggregator should check whether output is secure when drawin

cc/surfaces/surface_aggregator.h

 // 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.
 
 #ifndef CC_SURFACES_SURFACE_AGGREGATOR_H_
 #define CC_SURFACES_SURFACE_AGGREGATOR_H_
 
 #include <memory>
 #include <set>
 #include <unordered_map>
@@ skipping 24 matching lines @@
                     ResourceProvider* provider,
                     bool aggregate_only_damaged);
   ~SurfaceAggregator();
 
   std::unique_ptr<CompositorFrame> Aggregate(SurfaceId surface_id);
   void ReleaseResources(SurfaceId surface_id);
   SurfaceIndexMap& previous_contained_surfaces() {
     return previous_contained_surfaces_;
   }
   void SetFullDamageForSurface(SurfaceId surface_id);
+  void set_output_is_secure(bool secure) { output_is_secure_ = secure; }
 
  private:
   struct ClipData {
     ClipData() : is_clipped(false) {}
     ClipData(bool is_clipped, const gfx::Rect& rect)
         : is_clipped(is_clipped), rect(rect) {}
 
     bool is_clipped;
     gfx::Rect rect;
   };
@@ skipping 53 matching lines @@
   ResourceProvider* provider_;
 
   class RenderPassIdAllocator;
   using RenderPassIdAllocatorMap =
       std::unordered_map<SurfaceId,
                          std::unique_ptr<RenderPassIdAllocator>,
                          SurfaceIdHash>;
   RenderPassIdAllocatorMap render_pass_allocator_map_;
   int next_render_pass_id_;
   const bool aggregate_only_damaged_;
+  bool output_is_secure_;
 
   using SurfaceToResourceChildIdMap =
       std::unordered_map<SurfaceId, int, SurfaceIdHash>;
   SurfaceToResourceChildIdMap surface_id_to_resource_child_id_;
 
   // The following state is only valid for the duration of one Aggregate call
   // and is only stored on the class to avoid having to pass through every
   // function call.
 
   // This is the set of surfaces referenced in the aggregation so far, used to
@@ skipping 38 matching lines @@
   TransferableResourceArray* dest_resource_list_;
 
   base::WeakPtrFactory<SurfaceAggregator> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SurfaceAggregator);
 };
 
 }  // namespace cc
 
 #endif  // CC_SURFACES_SURFACE_AGGREGATOR_H_