cc: Remove low quality mode and cleanup tile versions.

cc/resources/tile.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_RESOURCES_TILE_H_
 #define CC_RESOURCES_TILE_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "cc/base/ref_counted_managed.h"
 #include "cc/resources/managed_tile_state.h"
 #include "cc/resources/picture_pile_impl.h"
-#include "cc/resources/raster_mode.h"
 #include "cc/resources/tile_priority.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/size.h"
 
 namespace cc {
 
 class CC_EXPORT Tile : public RefCountedManaged<Tile> {
  public:
   enum TileRasterFlags { USE_PICTURE_ANALYSIS = 1 << 0 };
 
@@ skipping 62 matching lines @@
   void MarkRequiredForActivation();
 
   bool required_for_activation() const {
     return priority_[PENDING_TREE].required_for_activation;
   }
 
   bool use_picture_analysis() const {
     return !!(flags_ & USE_PICTURE_ANALYSIS);
   }
 
-  bool NeedsRasterForMode(RasterMode mode) const {
-    return !managed_state_.tile_versions[mode].IsReadyToDraw();
-  }
-
-  bool HasResources() const {
-    for (int mode = 0; mode < NUM_RASTER_MODES; ++mode) {
-      if (managed_state_.tile_versions[mode].has_resource())
-        return true;
-    }
-    return false;
-  }
+  bool HasResources() const { return managed_state_.draw_info.has_resource(); }
 
   void AsValueInto(base::debug::TracedValue* dict) const;
 
   inline bool IsReadyToDraw() const {
-    for (int mode = 0; mode < NUM_RASTER_MODES; ++mode) {
-      if (managed_state_.tile_versions[mode].IsReadyToDraw())
-        return true;
-    }
-    return false;
+    return managed_state_.draw_info.IsReadyToDraw();
   }
 
-  const ManagedTileState::TileVersion& GetTileVersionForDrawing() const {
-    for (int mode = 0; mode < NUM_RASTER_MODES; ++mode) {
-      if (managed_state_.tile_versions[mode].IsReadyToDraw())
-        return managed_state_.tile_versions[mode];
-    }
-    return managed_state_.tile_versions[HIGH_QUALITY_RASTER_MODE];
+  const ManagedTileState::DrawInfo& draw_info() const {
+    return managed_state_.draw_info;
   }
 
+  ManagedTileState::DrawInfo& draw_info() { return managed_state_.draw_info; }
+
   float contents_scale() const { return contents_scale_; }
   gfx::Rect content_rect() const { return content_rect_; }
 
   int layer_id() const { return layer_id_; }
 
   int source_frame_number() const { return source_frame_number_; }
 
   void set_picture_pile(scoped_refptr<PicturePileImpl> pile) {
     DCHECK(pile->CanRaster(contents_scale_, content_rect_))
         << "Recording rect: "
         << gfx::ScaleToEnclosingRect(content_rect_, 1.f / contents_scale_)
                .ToString();
     picture_pile_ = pile;
   }
 
   size_t GPUMemoryUsageInBytes() const;
 
   gfx::Size size() const { return size_; }
 
-  RasterMode DetermineRasterModeForTree(WhichTree tree) const;
-  RasterMode DetermineOverallRasterMode() const;
-
-  // Functionality used in tests.
-  RasterMode GetRasterModeForTesting() const {
-    return managed_state().raster_mode;
-  }
-  ManagedTileState::TileVersion& GetTileVersionForTesting(RasterMode mode) {
-    return managed_state_.tile_versions[mode];
-  }
-
  private:
   friend class TileManager;
   friend class PrioritizedTileSet;
   friend class FakeTileManager;
   friend class BinComparator;
   friend class FakePictureLayerImpl;
 
   // Methods called by by tile manager.
   Tile(TileManager* tile_manager,
        PicturePileImpl* picture_pile,
        const gfx::Size& tile_size,
        const gfx::Rect& content_rect,
        float contents_scale,
        int layer_id,
        int source_frame_number,
        int flags);
   ~Tile();
 
   ManagedTileState& managed_state() { return managed_state_; }
   const ManagedTileState& managed_state() const { return managed_state_; }
-  RasterMode DetermineRasterModeForResolution(TileResolution resolution) const;
 
   bool HasRasterTask() const;
 
   TileManager* tile_manager_;
   scoped_refptr<PicturePileImpl> picture_pile_;
   gfx::Size size_;
   gfx::Rect content_rect_;
   float contents_scale_;
   bool is_occluded_[NUM_TREES];
 
   TilePriority priority_[NUM_TREES];
   ManagedTileState managed_state_;
   int layer_id_;
   int source_frame_number_;
   int flags_;
   bool is_shared_;
 
   Id id_;
   static Id s_next_id_;
 
   DISALLOW_COPY_AND_ASSIGN(Tile);
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_TILE_H_