cc: Don't require low res to activate for shared ready-to-draw tiles.

cc/test/fake_picture_layer_impl.cc

 // Copyright 2013 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 "cc/test/fake_picture_layer_impl.h"
 
 #include <vector>
 #include "cc/resources/tile.h"
 #include "cc/trees/layer_tree_impl.h"
 
@@ skipping 122 matching lines @@
     PictureLayerTiling* tiling = tilings_->tiling_at(tiling_idx);
     SetAllTilesReadyInTiling(tiling);
   }
 }
 
 void FakePictureLayerImpl::SetAllTilesReadyInTiling(
     PictureLayerTiling* tiling) {
   std::vector<Tile*> tiles = tiling->AllTilesForTesting();
   for (size_t tile_idx = 0; tile_idx < tiles.size(); ++tile_idx) {
     Tile* tile = tiles[tile_idx];
-    ManagedTileState& state = tile->managed_state();
-    for (size_t mode_idx = 0; mode_idx < NUM_RASTER_MODES; ++mode_idx)
-      state.tile_versions[mode_idx].SetSolidColorForTesting(true);
-    DCHECK(tile->IsReadyToDraw());
+    SetTileReady(tile);
   }
 }
 
+void FakePictureLayerImpl::SetTileReady(Tile* tile) {
+  ManagedTileState& state = tile->managed_state();
+  for (size_t mode_idx = 0; mode_idx < NUM_RASTER_MODES; ++mode_idx)
+    state.tile_versions[mode_idx].SetSolidColorForTesting(true);
+  DCHECK(tile->IsReadyToDraw());
+}
+
 void FakePictureLayerImpl::CreateDefaultTilingsAndTiles() {
   layer_tree_impl()->UpdateDrawProperties();
 
   if (CanHaveTilings()) {
     DCHECK_EQ(tilings()->num_tilings(),
               layer_tree_impl()->settings().create_low_res_tiling ? 2u : 1u);
     DCHECK_EQ(tilings()->tiling_at(0)->resolution(), HIGH_RESOLUTION);
     HighResTiling()->CreateAllTilesForTesting();
     if (layer_tree_impl()->settings().create_low_res_tiling) {
       DCHECK_EQ(tilings()->tiling_at(1)->resolution(), LOW_RESOLUTION);
       LowResTiling()->CreateAllTilesForTesting();
     }
   } else {
     DCHECK_EQ(tilings()->num_tilings(), 0u);
   }
 }
 
 void FakePictureLayerImpl::DidBecomeActive() {
   PictureLayerImpl::DidBecomeActive();
   ++did_become_active_call_count_;
 }
 
 bool FakePictureLayerImpl::HasValidTilePriorities() const {
   return use_set_valid_tile_priorities_flag_
              ? has_valid_tile_priorities_
              : PictureLayerImpl::HasValidTilePriorities();
 }
 
 }  // namespace cc