cc: Do not ignore layers without valid priorities during eviction.

cc/test/fake_picture_layer_tiling_client.cc

Index: cc/test/fake_picture_layer_tiling_client.cc
diff --git a/cc/test/fake_picture_layer_tiling_client.cc b/cc/test/fake_picture_layer_tiling_client.cc
index 2149ff4792f401de9be9831af7358c7210d4e078..a218a212e8496f40a5f0e0bfd446eb994f27dd53 100644
--- a/cc/test/fake_picture_layer_tiling_client.cc
+++ b/cc/test/fake_picture_layer_tiling_client.cc
@@ -17,6 +17,7 @@ FakePictureLayerTilingClient::FakePictureLayerTilingClient()
       twin_tiling_(NULL),
       recycled_twin_tiling_(NULL),
       allow_create_tile_(true),
+      max_tile_priority_bin_(TilePriority::NOW),
       max_tiles_for_interest_area_(10000),
       skewport_target_time_in_seconds_(1.0f),
       skewport_extrapolation_limit_in_content_pixels_(2000) {
@@ -32,6 +33,7 @@ FakePictureLayerTilingClient::FakePictureLayerTilingClient(
       twin_tiling_(NULL),
       recycled_twin_tiling_(NULL),
       allow_create_tile_(true),
+      max_tile_priority_bin_(TilePriority::NOW),
       max_tiles_for_interest_area_(10000),
       skewport_target_time_in_seconds_(1.0f) {
 }
@@ -60,6 +62,11 @@ gfx::Size FakePictureLayerTilingClient::CalculateTileSize(
   return tile_size_;
 }
 
+TilePriority::PriorityBin FakePictureLayerTilingClient::GetMaxTilePriorityBin()
+    const {
+  return max_tile_priority_bin_;
+}
+
 size_t FakePictureLayerTilingClient::GetMaxTilesForInterestArea() const {
   return max_tiles_for_interest_area_;
 }