Add debug shortcuts that toggles options to shows debug borders and fps counters

ui/compositor/compositor.cc

Index: ui/compositor/compositor.cc
diff --git a/ui/compositor/compositor.cc b/ui/compositor/compositor.cc
index 077034d1bbcc029e806ead346e29b1e4312911d6..fc9b07f0d4c8f9f0faa7225cb52aa1b957ded20e 100644
--- a/ui/compositor/compositor.cc
+++ b/ui/compositor/compositor.cc
@@ -759,13 +759,12 @@ Compositor::OffscreenContextProviderForCompositorThread() {
       OffscreenContextProviderForCompositorThread();
 }
 
-bool Compositor::IsShowPaintRectsEnabled() const {
-  return host_->debug_state().show_paint_rects;
+const cc::LayerTreeDebugState& Compositor::GetLayerTreeDebugState() const {
+  return host_->debug_state();
 }
 
-void Compositor::SetShowPaintRectsEnabled(bool enabled) {
-  cc::LayerTreeDebugState debug_state = host_->debug_state();
-  debug_state.show_paint_rects = enabled;
+void Compositor::SetLayerTreeDebugState(
+    const cc::LayerTreeDebugState& debug_state) {
   host_->SetDebugState(debug_state);
 }