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This CL enumerates minigbm supported formats for GBM_BO_USE_TEXTURING,
and creates a vector that can be obtained through SurfaceFactoryOzone
GetSupportedFormatsForTexturing(). This CL also wires that to a new
GpuInfo entry supported over Mojo (and dumped in chrome:gpu).

This CL is used in e.g. crrev.com/c/1590464 in GLES2DecoderImpl's
GetCapabilities() (vicinity of [1]) to indicate if the platform
supports or not P010 (and will possibly be used to address the
TODO in [2] where a gles2 FeatureFlag is hardcoded).

[1] https://cs.chromium.org/chromium/src/gpu/command_buffer/service/gles2_cmd_decoder.cc?gsn=ContextGroup&g=0&l=4266
[2] https://cs.chromium.org/chromium/src/gpu/command_buffer/service/feature_info.cc?type=cs&g=0&l=1102

Bug: 911754, 646148
Change-Id: I49d6002a06d1f4585956f8f0746ab5349e2714e8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1612041Reviewed-by: Robert Kroeger <rjkroege@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Reviewed-by: Robert Sesek <rsesek@chromium.org>
Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
Reviewed-by: Daniel Nicoara <dnicoara@chromium.org>
Commit-Queue: Miguel Casas <mcasas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#663857}