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 bb02b494231a9c1860b630e922257cdef30bbf64..77df05fdfd1039d7a2df2251656fa5e7ebe07b7b 100644
--- a/content/renderer/gpu/render_widget_compositor.cc
+++ b/content/renderer/gpu/render_widget_compositor.cc
@@ -753,7 +753,11 @@ 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() {