http://skbug.com/3130 step 4 (include/utils/SkWGL.h gone for good)

BUG=skia:3130

Review URL: https://codereview.chromium.org/729363003
Add computation of saveLayer information to RecordingBench

In (Add flag to beginRecording to request saveLayer information - https://codereview.chromium.org/721883002/) I claimed the extra recording cost would be negligible. This CL attempts to put some numbers behind that.

Review URL: https://codereview.chromium.org/741523002
rebaseline new GTX images from drive update on linux

BUG=skia:
TBR=borenet
NOTRY=true

Review URL: https://codereview.chromium.org/735833002
more rebaselines for the perspective test server

BUG=skia:

Review URL: https://codereview.chromium.org/727063004
a few straggling rebaselines

BUG=skia:

Review URL: https://codereview.chromium.org/738943003
ignore dashcubics test pending skia bug 2049

BUG=skia:2049

Review URL: https://codereview.chromium.org/741533002