cc: Refactor content scale/bounds into draw properties

cc/draw_properties.h

Index: cc/draw_properties.h
diff --git a/cc/draw_properties.h b/cc/draw_properties.h
index 3895ef0720ab675044c7f7f9d63142261ac8e3ed..fe92df88b21bbfa90edf5217b996823e1e4473af 100644
--- a/cc/draw_properties.h
+++ b/cc/draw_properties.h
@@ -24,6 +24,8 @@ struct CC_EXPORT DrawProperties {
         , can_use_lcd_text(false)
         , is_clipped(false)
         , render_target(0)
+        , contents_scale_x(1)
+        , contents_scale_y(1)
         , num_descendants_that_draw_content(0)
     {
     }
@@ -75,6 +77,10 @@ struct CC_EXPORT DrawProperties {
     // state.
     gfx::Rect clip_rect;
 
+    float contents_scale_x;

[danakj, 2012/12/14 22:58:41]

descriptive comment please like the others :)

i wrote some prose in the previous review round if you like it, or something
else if you don't :P

[enne (OOO), 2012/12/14 23:06:01]

Done.  Sorry I missed that.  :)

+    float contents_scale_y;
+    gfx::Size content_bounds;
+
     // Does not include this layer itself, only its children and descendants.
     int num_descendants_that_draw_content;
 };