Hide location bar on WebKit programmatic scroll.

content/common/view_messages.h

Index: content/common/view_messages.h
diff --git a/content/common/view_messages.h b/content/common/view_messages.h
index c87ff495a051340307cda2ef180a4421f39f2cc6..024bc3e6a1ab7304fd7f6980823a6757504a4d44 100644
--- a/content/common/view_messages.h
+++ b/content/common/view_messages.h
@@ -1356,6 +1356,9 @@ IPC_MESSAGE_ROUTED1(ViewMsg_ImeBatchStateChanged,
 IPC_MESSAGE_ROUTED1(ViewMsg_EnableHidingTopControls,
                     bool /* enable */)
 
+// Tells the renderer to show or hide the top controls.
+IPC_MESSAGE_ROUTED1(ViewMsg_ShowTopControls, bool /* show */)
+
 IPC_MESSAGE_ROUTED0(ViewMsg_ShowImeIfNeeded)
 
 #elif defined(OS_MACOSX)
@@ -1498,6 +1501,11 @@ IPC_MESSAGE_ROUTED0(ViewHostMsg_UpdateScreenRects_ACK)
 IPC_MESSAGE_ROUTED1(ViewHostMsg_RequestMove,
                     gfx::Rect /* position */)
 
+// Sent by the renderer process to notify the browser that the web page has
+// programmatically scrolled.
+IPC_MESSAGE_ROUTED1(ViewHostMsg_DidProgrammaticallyScroll,
+                    gfx::Point /* scroll point */)
+
 // Notifies the browser that a frame in the view has changed. This message
 // has a lot of parameters and is packed/unpacked by functions defined in
 // render_messages.h.