Normalize top controls offset to (0, 1), Chromium-side.

content/renderer/gpu/render_widget_compositor.cc

Index: content/renderer/gpu/render_widget_compositor.cc
diff --git a/content/renderer/gpu/render_widget_compositor.cc b/content/renderer/gpu/render_widget_compositor.cc
index e3cb405a68357be49fd66a1a8d1dce4f1b46df28..313e0354079ed001a6c1686310b649f1f872dd68 100644
--- a/content/renderer/gpu/render_widget_compositor.cc
+++ b/content/renderer/gpu/render_widget_compositor.cc
@@ -750,7 +750,11 @@ void RenderWidgetCompositor::setShowScrollBottleneckRects(bool show) {
 }
 
 void RenderWidgetCompositor::setTopControlsContentOffset(float offset) {
-  layer_tree_host_->SetTopControlsContentOffset(offset);
+  setTopControlsShownRatio(offset);
+}
+
+void RenderWidgetCompositor::setTopControlsShownRatio(float ratio) {
+  layer_tree_host_->SetTopControlsShownRatio(ratio);
 }
 
 void RenderWidgetCompositor::WillBeginMainFrame(int frame_id) {