Remaining code for basic tile compression functionality.

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 0c0a10d1e01be1dc2d033e5054b732813b49366e..010258561d077fed4a47de32961357af501410bf 100644
--- a/cc/output/renderer_settings.cc
+++ b/cc/output/renderer_settings.cc
@@ -21,7 +21,8 @@ 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() {