Simplify the BackingStore handling.

This patch removes the black borders around the widget when resizing.

- No need to resize the BackingStore direcly, RenderWidgetHostImpl::WasResized
  takes care of allocating a new one with the correct size.
- Get the backing store just before painting instead of pushing it when
  scheduling an update. Getting the backing store has side effects that
  assumes it is done that way.
- Remove the about_to_validate_and_paint_ check as all our painting updates
  are scheduled back to the event loop and that we are now only fetching
  the BackingStore at this point.

1 files changed, 0 insertions, 2 deletions

diff --git a/lib/render_widget_host_view_qt_delegate_widget.h b/lib/render_widget_host_view_qt_delegate_widget.h
index 9087ba017..f6da4f484 100644
--- a/lib/render_widget_host_view_qt_delegate_widget.h
+++ b/lib/render_widget_host_view_qt_delegate_widget.h
@@ -17,7 +17,6 @@ class RenderWidgetHostViewQtDelegateWidget : public QWidget, public RenderWidget
 public:
     RenderWidgetHostViewQtDelegateWidget(content::RenderWidgetHostViewQt* view, QWidget *parent = 0);
 
-    virtual void setBackingStore(BackingStoreQt* backingStore);
     virtual QRectF screenRect() const;
     virtual void show();
     virtual void hide();
@@ -33,7 +32,6 @@ protected:
     void resizeEvent(QResizeEvent *resizeEvent);
 
 private:
-    BackingStoreQt* m_backingStore;
     QPainter* m_painter;
     content::RenderWidgetHostViewQt *m_view;
 };