cc: Plumb gpu/sw image decode limits as layer tree settings.

cc/trees/layer_tree_settings.cc

Index: cc/trees/layer_tree_settings.cc
diff --git a/cc/trees/layer_tree_settings.cc b/cc/trees/layer_tree_settings.cc
index 03786a8494d9595bcddd3ebbe84dfef17f49d687..d13a01606ba04d5f7bf4450376a0b5f7a04260af 100644
--- a/cc/trees/layer_tree_settings.cc
+++ b/cc/trees/layer_tree_settings.cc
@@ -108,6 +108,8 @@ LayerTreeSettings::LayerTreeSettings()
       memory_policy_(64 * 1024 * 1024,
                      gpu::MemoryAllocation::CUTOFF_ALLOW_EVERYTHING,
                      ManagedMemoryPolicy::kDefaultNumResourcesLimit),
+      gpu_decoded_image_budget_bytes(96 * 1024 * 1024),
+      software_decoded_image_budget_bytes(128 * 1024 * 1024),
       use_cached_picture_raster(true) {}
 
 LayerTreeSettings::LayerTreeSettings(const LayerTreeSettings& other) = default;