Skip composeshader_bitmap GM on 64-bit Win CPU Test bots

tools/dm_flags.py

Index: tools/dm_flags.py
diff --git a/tools/dm_flags.py b/tools/dm_flags.py
index 7a7eff01314b582df76482c957e46024d9943212..baed46de2b1648a8c16400c6572b8a6806c6294a 100755
--- a/tools/dm_flags.py
+++ b/tools/dm_flags.py
@@ -158,6 +158,9 @@ def get_args(bot):
     blacklist.extend('_ image gen_platf 4bpp-pixeldata-cropped.bmp'.split(' '))
     blacklist.extend('_ image gen_platf 32bpp-pixeldata-cropped.bmp'.split(' '))
     blacklist.extend('_ image gen_platf 24bpp-pixeldata-cropped.bmp'.split(' '))
+    if 'x86_64' in bot and 'CPU' in bot:
+      # This GM triggers a SkSmallAllocator assert.
+      blacklist.extend('_ gm _ composeshader_bitmap'.split(' '))
 
   # skia:4095
   for test in ['not_native32_bitmap_config',
@@ -274,6 +277,7 @@ def self_test():
     'Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-TSAN',
     'Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-Valgrind',
     'Test-Ubuntu-GCC-ShuttleA-GPU-GTX550Ti-x86_64-Release-Valgrind',
+    'Test-Win-MSVC-GCE-CPU-AVX2-x86_64-Debug',
     'Test-Win10-MSVC-ShuttleA-GPU-GTX660-x86_64-Debug-Vulkan',
     'Test-Win7-MSVC-ShuttleA-GPU-HD2000-x86-Debug-ANGLE',
   ]