Allow changing top controls height

cc/trees/layer_tree_host.cc

Index: cc/trees/layer_tree_host.cc
diff --git a/cc/trees/layer_tree_host.cc b/cc/trees/layer_tree_host.cc
index 808bf21a767fc772ecc909c88242c3e27f93584f..9bb3fddc6cc8c32d64780a8ed019e8d69aef3b93 100644
--- a/cc/trees/layer_tree_host.cc
+++ b/cc/trees/layer_tree_host.cc
@@ -116,7 +116,8 @@ LayerTreeHost::LayerTreeHost(
       num_failed_recreate_attempts_(0),
       settings_(settings),
       debug_state_(settings.initial_debug_state),
-      top_controls_layout_height_(0.f),
+      top_controls_shrink_blink_size_(false),
+      top_controls_height_(0.f),
       top_controls_content_offset_(0.f),
       device_scale_factor_(1.f),
       visible_(true),
@@ -368,7 +369,9 @@ void LayerTreeHost::FinishCommitOnImplThread(LayerTreeHostImpl* host_impl) {
 
   sync_tree->PassSwapPromises(&swap_promise_list_);
 
-  sync_tree->set_top_controls_layout_height(top_controls_layout_height_);
+  sync_tree->set_top_controls_shrink_blink_size(
+      top_controls_shrink_blink_size_);
+  sync_tree->set_top_controls_height(top_controls_height_);
   sync_tree->set_top_controls_content_offset(top_controls_content_offset_);
   sync_tree->set_top_controls_delta(sync_tree->top_controls_delta() -
       sync_tree->sent_top_controls_delta());
@@ -659,11 +662,19 @@ void LayerTreeHost::SetViewportSize(const gfx::Size& device_viewport_size) {
   SetNeedsCommit();
 }
 
-void LayerTreeHost::SetTopControlsLayoutHeight(float height) {
-  if (top_controls_layout_height_ == height)
+void LayerTreeHost::SetTopControlsShrinkBlinkSize(bool shrink) {
+  if (top_controls_shrink_blink_size_ == shrink)
     return;
 
-  top_controls_layout_height_ = height;
+  top_controls_shrink_blink_size_ = shrink;
+  SetNeedsCommit();
+}
+
+void LayerTreeHost::SetTopControlsHeight(float height) {
+  if (top_controls_height_ == height)
+    return;
+
+  top_controls_height_ = height;
   SetNeedsCommit();
 }