Made Blink aware of top controls offset (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 35dee073e582be9588a5239626f42e09bda6ec8b..8e2eb916aad5c85cfbdbee37302eab3c08ce21a8 100644
--- a/content/renderer/gpu/render_widget_compositor.cc
+++ b/content/renderer/gpu/render_widget_compositor.cc
@@ -453,9 +453,8 @@ void RenderWidgetCompositor::UpdateTopControlsState(
                                            animate);
 }
 
-void RenderWidgetCompositor::SetTopControlsLayoutHeight(
-    float top_controls_layout_height) {
-  layer_tree_host_->SetTopControlsLayoutHeight(top_controls_layout_height);
+void RenderWidgetCompositor::SetTopControlsLayoutHeight(float height) {
+  layer_tree_host_->SetTopControlsLayoutHeight(height);
 }
 
 void RenderWidgetCompositor::SetNeedsRedrawRect(gfx::Rect damage_rect) {
@@ -746,6 +745,10 @@ void RenderWidgetCompositor::setShowScrollBottleneckRects(bool show) {
   layer_tree_host_->SetDebugState(debug_state);
 }
 
+void RenderWidgetCompositor::setTopControlsContentOffset(float offset) {
+  layer_tree_host_->SetTopControlsContentOffset(offset);
+}
+
 void RenderWidgetCompositor::WillBeginMainFrame(int frame_id) {
   widget_->InstrumentWillBeginFrame(frame_id);
   widget_->willBeginCompositorFrame();
@@ -771,10 +774,14 @@ void RenderWidgetCompositor::Layout() {
   widget_->webwidget()->layout();
 }
 
-void RenderWidgetCompositor::ApplyScrollAndScale(
+void RenderWidgetCompositor::ApplyViewportDeltas(
     const gfx::Vector2d& scroll_delta,
-    float page_scale) {
-  widget_->webwidget()->applyScrollAndScale(scroll_delta, page_scale);
+    float page_scale,
+    float top_controls_delta) {
+  widget_->webwidget()->applyViewportDeltas(
+      scroll_delta,
+      page_scale,
+      top_controls_delta);
 }
 
 scoped_ptr<cc::OutputSurface> RenderWidgetCompositor::CreateOutputSurface(