ResizeSynchronously should resize the visible viewport as well.

content/renderer/render_widget.cc

Index: content/renderer/render_widget.cc
diff --git a/content/renderer/render_widget.cc b/content/renderer/render_widget.cc
index d9dbe21ce1cbb745540202a7b985521962c3e388..7b72896ee9b61ed7b27eef7d7c77d3011fd1a171 100644
--- a/content/renderer/render_widget.cc
+++ b/content/renderer/render_widget.cc
@@ -844,14 +844,12 @@ void RenderWidget::Resize(const gfx::Size& new_size,
   DCHECK(resize_ack != SEND_RESIZE_ACK || next_paint_is_resize_ack());
 }
 
-void RenderWidget::ResizeSynchronously(
-    const gfx::Rect& new_position,
-    const gfx::Size& visible_viewport_size) {
+void RenderWidget::ResizeSynchronously(const gfx::Rect& new_position) {

[Avi (use Gerrit), 2015/02/03 01:30:42]

ditto

[bokan, 2015/02/03 03:13:17]

Done.

   Resize(new_position.size(),
          new_position.size(),
          top_controls_shrink_blink_size_,
          top_controls_height_,
-         visible_viewport_size,
+         new_position.size(),
          gfx::Rect(),
          is_fullscreen_,
          NO_RESIZE_ACK);
@@ -1617,7 +1615,7 @@ void RenderWidget::setWindowRect(const WebRect& rect) {
       initial_pos_ = pos;
     }
   } else {
-    ResizeSynchronously(pos, visible_viewport_size_);
+    ResizeSynchronously(pos);

[Avi (use Gerrit), 2015/02/03 01:30:42]

ditto

[bokan, 2015/02/03 03:13:17]

Done.

   }
 }