Clean up clipping and deferral logic

bug:8037003

-Merges replay methods
-Bounds checking for DrawBitmapMesh, DrawRects and DrawDisplayList
-Use clip as bounds for otherwise unbounded draw operations

Clip-as-bounds is correct for drawColor and functor, but other draw
operations (pos text, text on path, and layers) still need true bounds
calculation

Change-Id: I5d5149d2c624f01e3fe46628bf156e835e69b9d5