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TBR=

BUG=skia:

Review URL: https://codereview.chromium.org/688443002
Updated all page sets to capture new set of webpage archives.

Fixed the record_wpr retry mechanism in webpages_playback.py.

Updated all page sets to remove the no longer needed RunSmoothness and RunNavigateSteps.

Updated the key_silk_cases pagesets to point to a non svn location:
* skia_fontwipe_desktop.py
* skia_silkfinance_desktop.py

Removed mercurynews, record_wpr was timing out because of a popup.

Added back the following pagesets which were previously disabled but are now working again:
* skia_cnn_nexus10.py
* skia_wordpress_desktop.py
* skia_transformice_nexus10.py

BUG=skia:3049

Review URL: https://codereview.chromium.org/684863002
rename GrTextureDesc->GrSurfaceDesc, GrTextureFlags->GrSurfaceFlags

Review URL: https://codereview.chromium.org/682223002