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 disable_by_gl_renderer: a string contain patterns to be used to match
         with gl renderer string. If any pattern in the string matches,
         vulkan will be disabled.
 force_enable_by_gl_renderer: similar to disable_by_gl_renderer, but if
         any pattern matches, vulkan will be enabled even if the GPU is
         blocklisted.

params: 
Bug: 1022495
Change-Id: I04c1affd7c3c22baa4aa0bc048463f8f0a80d3a7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2361042
Auto-Submit: Peng Huang <penghuang@chromium.org>
Reviewed-by: Jonathan Backer <backer@chromium.org>
Reviewed-by: Alexei Svitkine <asvitkine@chromium.org>
Commit-Queue: Peng Huang <penghuang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#800370}