Update screen rects when showing an infobar.

content/browser/renderer_host/render_widget_host_impl.cc

Index: content/browser/renderer_host/render_widget_host_impl.cc
diff --git a/content/browser/renderer_host/render_widget_host_impl.cc b/content/browser/renderer_host/render_widget_host_impl.cc
index a2a664bab1ad92b698b175a010827d754a6fbb42..9e64811e523fb6a2318c5d084765bcc30deaeecf 100644
--- a/content/browser/renderer_host/render_widget_host_impl.cc
+++ b/content/browser/renderer_host/render_widget_host_impl.cc
@@ -273,10 +273,15 @@ void RenderWidgetHostImpl::SendScreenRects() {
   if (!view_)
     return;
 
-  last_view_screen_rect_ = view_->GetViewBounds();
-  last_window_screen_rect_ = view_->GetBoundsInRootWindow();
+  gfx::Rect new_view_screen_rect = view_->GetViewBounds();
+  gfx::Rect new_window_screen_rect = view_->GetBoundsInRootWindow();
+  if (last_view_screen_rect_ == new_view_screen_rect &&
+      last_window_screen_rect_ == new_window_screen_rect)
+      return;
   Send(new ViewMsg_UpdateScreenRects(
-      GetRoutingID(), last_view_screen_rect_, last_window_screen_rect_));
+      GetRoutingID(), new_view_screen_rect, new_window_screen_rect));
+  last_view_screen_rect_ = new_view_screen_rect;
+  last_window_screen_rect_ = new_window_screen_rect;
   waiting_for_screen_rects_ack_ = true;
 }