Hide location bar on Javascript-initiated scroll.

chrome/renderer/chrome_render_view_observer.cc

Index: chrome/renderer/chrome_render_view_observer.cc
diff --git a/chrome/renderer/chrome_render_view_observer.cc b/chrome/renderer/chrome_render_view_observer.cc
index 835bae2a11313a0e9c1c2e24e69c90de8e08975b..5b8586320c27977fe85b9f07bead5694bba36a77 100644
--- a/chrome/renderer/chrome_render_view_observer.cc
+++ b/chrome/renderer/chrome_render_view_observer.cc
@@ -212,6 +212,10 @@ bool ChromeRenderViewObserver::OnMessageReceived(const IPC::Message& message) {
     IPC_MESSAGE_HANDLER(ChromeViewMsg_AddStrictSecurityHost,
                         OnAddStrictSecurityHost)
     IPC_MESSAGE_HANDLER(ChromeViewMsg_NPAPINotSupported, OnNPAPINotSupported)
+#if defined(OS_ANDROID)
+    IPC_MESSAGE_HANDLER(ChromeViewMsg_UpdateTopControlsState,
+                        OnUpdateTopControlsState)
+#endif
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
 
@@ -279,6 +283,15 @@ void ChromeRenderViewObserver::OnNPAPINotSupported() {
 #endif
 }
 
+#if defined(OS_ANDROID)
+void ChromeRenderViewObserver::OnUpdateTopControlsState(
+    content::TopControlsState constraints,
+    content::TopControlsState current,
+    bool animate) {
+  render_view()->UpdateTopControlsState(constraints, current, animate);
+}
+#endif
+
 void ChromeRenderViewObserver::Navigate(const GURL& url) {
   // Execute cache clear operations that were postponed until a navigation
   // event (including tab reload).