Add predfined configs for msaa4, nvpr4, nvpr4dit, and srgb that explictly use OpenGL rather than GL…

tools/nanobench_flags.py

Index: tools/nanobench_flags.py
diff --git a/tools/nanobench_flags.py b/tools/nanobench_flags.py
index 02b885634e9c40a99703a1afc9c793eae7f0403b..b14251ed8578e0aee011c577fd0425597f10f4cb 100755
--- a/tools/nanobench_flags.py
+++ b/tools/nanobench_flags.py
@@ -49,7 +49,13 @@ def get_args(bot):
     if ('GalaxyS4'    not in bot and
         'NexusPlayer' not in bot):
       if 'Android' in bot:
-        config.extend(['msaa4', 'nvpr4', 'nvprdit4'])
+        # The TegraX1 has a regular OpenGL implementation. We bench that instead
+        # of ES.
+        if 'TegraX1' in bot:
+          config.remove('gpu')
+          config.extend(['gl', 'glmsaa4', 'glnvpr4', 'glnvprdit4'])
+        else:
+          config.extend(['msaa4', 'nvpr4', 'nvprdit4'])
       else:
         config.extend(['msaa16', 'nvpr16', 'nvprdit16'])
     args.append('--config')
@@ -150,6 +156,7 @@ def self_test():
     'Test-iOS-Clang-iPad4-GPU-SGX554-Arm7-Debug',
     'Test-Android-GCC-GalaxyS4-GPU-SGX544-Arm7-Release',
     'Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-Trybot',
+    'Perf-Android-GCC-NVIDIA_Shield-GPU-TegraX1-Arm64-Release',
   ]
 
   cov = coverage.coverage()