Remove unused fields from //content.

content/browser/renderer_host/render_widget_host_view_aura.h

Index: content/browser/renderer_host/render_widget_host_view_aura.h
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.h b/content/browser/renderer_host/render_widget_host_view_aura.h
index a8e3d3c4e251aa917b6d2f789f10c35fb6182958..f333037480c779895e868d1265c85d8dd6f3d5ea 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.h
+++ b/content/browser/renderer_host/render_widget_host_view_aura.h
@@ -592,13 +592,6 @@ class CONTENT_EXPORT RenderWidgetHostViewAura
   // Current tooltip text.
   base::string16 tooltip_;
 
-  // The size and scale of the last software compositing frame that was swapped.
-  gfx::Size last_swapped_software_frame_size_;
-  float last_swapped_software_frame_scale_factor_;
-
-  // If non-NULL we're in OnPaint() and this is the supplied canvas.
-  gfx::Canvas* paint_canvas_;
-
   // Used to record the last position of the mouse.
   // While the mouse is locked, they store the last known position just as mouse
   // lock was entered.