Allow one-copy task tile worker pool to use compressed textures.

cc/output/renderer_settings.cc

Index: cc/output/renderer_settings.cc
diff --git a/cc/output/renderer_settings.cc b/cc/output/renderer_settings.cc
index 35415f1986640433d4ea3c979dad24610fc8170c..c4f6e75931aa704dd2f3f097e04d4a6759f3073a 100644
--- a/cc/output/renderer_settings.cc
+++ b/cc/output/renderer_settings.cc
@@ -22,7 +22,8 @@ RendererSettings::RendererSettings()
       refresh_rate(60.0),
       highp_threshold_min(0),
       use_rgba_4444_textures(false),
-      texture_id_allocation_chunk_size(64) {}
+      texture_id_allocation_chunk_size(64),
+      use_tile_compression(false) {}
 
 RendererSettings::~RendererSettings() {
 }