cc: Explicitly invalidate all dropped recordings on the main thread.

cc/resources/picture_layer_tiling_unittest.cc

Index: cc/resources/picture_layer_tiling_unittest.cc
diff --git a/cc/resources/picture_layer_tiling_unittest.cc b/cc/resources/picture_layer_tiling_unittest.cc
index 9743a8239cd02e0af64544c0f9e0f86c481de38b..8d2a4618707ea97bbccc644595863fccf8055663 100644
--- a/cc/resources/picture_layer_tiling_unittest.cc
+++ b/cc/resources/picture_layer_tiling_unittest.cc
@@ -189,23 +189,6 @@ class PictureLayerTilingIteratorTest : public testing::Test {
   DISALLOW_COPY_AND_ASSIGN(PictureLayerTilingIteratorTest);
 };
 
-TEST_F(PictureLayerTilingIteratorTest, ResizeDeletesTiles) {
-  // Verifies that a resize deletes tiles that used to be on the edge.
-  gfx::Size tile_size(100, 100);
-  gfx::Size original_layer_size(10, 10);
-  Initialize(tile_size, 1.f, original_layer_size);
-  SetLiveRectAndVerifyTiles(gfx::Rect(original_layer_size));
-
-  // Tiling only has one tile, since its total size is less than one.
-  EXPECT_TRUE(tiling_->TileAt(0, 0));
-
-  // Stop creating tiles so that any invalidations are left as holes.
-  client_.set_allow_create_tile(false);
-
-  tiling_->SetLayerBounds(gfx::Size(200, 200));
-  EXPECT_FALSE(tiling_->TileAt(0, 0));
-}
-
 TEST_F(PictureLayerTilingIteratorTest, LiveTilesExactlyCoverLiveTileRect) {
   Initialize(gfx::Size(100, 100), 1, gfx::Size(1099, 801));
   SetLiveRectAndVerifyTiles(gfx::Rect(100, 100));