Add buffer_to_texture_target_map to LayerTreeSettings

cc/tiles/tile_manager_unittest.cc

Index: cc/tiles/tile_manager_unittest.cc
diff --git a/cc/tiles/tile_manager_unittest.cc b/cc/tiles/tile_manager_unittest.cc
index 4cfe0123e32ad88474142495e95e74d7b5948a2f..6b226671a402bee50e7d91302d5f83975b41866b 100644
--- a/cc/tiles/tile_manager_unittest.cc
+++ b/cc/tiles/tile_manager_unittest.cc
@@ -87,7 +87,7 @@ class TileManagerTilePriorityQueueTest : public TestLayerTreeHostBase {
   LayerTreeSettings CreateSettings() override {
     LayerTreeSettings settings;
     settings.create_low_res_tiling = true;
-    settings.renderer_settings.buffer_to_texture_target_map =
+    settings.buffer_to_texture_target_map =
         DefaultBufferToTextureTargetMapForTesting();
     return settings;
   }
@@ -2055,7 +2055,7 @@ class TileManagerReadyToDrawTest : public TileManagerTest {
 
   LayerTreeSettings CreateSettings() override {
     LayerTreeSettings settings;
-    settings.renderer_settings.buffer_to_texture_target_map =
+    settings.buffer_to_texture_target_map =
         DefaultBufferToTextureTargetMapForTesting();
     return settings;
   }
@@ -2334,7 +2334,7 @@ class CheckerImagingTileManagerTest : public TestLayerTreeHostBase {
   LayerTreeSettings CreateSettings() override {
     LayerTreeSettings settings;
     settings.enable_checker_imaging = true;
-    settings.renderer_settings.buffer_to_texture_target_map =
+    settings.buffer_to_texture_target_map =
         DefaultBufferToTextureTargetMapForTesting();
     return settings;
   }