Modify Skia recipes to allow running XSAN on Swarming.

scripts/slave/recipe_modules/skia/fake_specs.py

Index: scripts/slave/recipe_modules/skia/fake_specs.py
diff --git a/scripts/slave/recipe_modules/skia/fake_specs.py b/scripts/slave/recipe_modules/skia/fake_specs.py
index ba3167924e147e52d19c1817675cfcd9124c643b..0e3a0fb5d11a828709bbf7bb8fd208994108e3e1 100644
--- a/scripts/slave/recipe_modules/skia/fake_specs.py
+++ b/scripts/slave/recipe_modules/skia/fake_specs.py
@@ -360,6 +360,35 @@ FAKE_SPECS = {
     'upload_dm_results': False,
     'upload_perf_results': False,
   },
+  'Build-Ubuntu-GCC-x86_64-Debug-SwarmingMSAN': {
+    'build_targets': [
+      'dm',
+      'nanobench',
+    ],
+    'builder_cfg': {
+      'compiler': 'GCC',
+      'configuration': 'Debug',
+      'extra_config': 'SwarmingMSAN',
+      'is_trybot': False,
+      'os': 'Ubuntu',
+      'role': 'Build',
+      'target_arch': 'x86_64',
+    },
+    'configuration': 'Debug',
+    'dm_flags': [
+      '--dummy-flags',
+    ],
+    'do_perf_steps': False,
+    'do_test_steps': False,
+    'env': {
+      'GYP_DEFINES': 'skia_arch_type=x86_64 skia_gpu=0 skia_warnings_as_errors=0',
+    },
+    'nanobench_flags': [
+      '--dummy-flags',
+    ],
+    'upload_dm_results': False,
+    'upload_perf_results': False,
+  },
   'Build-Win-MSVC-x86-Debug': {
     'build_targets': [
       'most',
@@ -967,6 +996,39 @@ FAKE_SPECS = {
     'upload_dm_results': False,
     'upload_perf_results': False,
   },
+  'Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-SwarmingMSAN': {
+    'build_targets': [
+      'dm',
+      'nanobench',
+    ],
+    'builder_cfg': {
+      'arch': 'x86_64',
+      'compiler': 'GCC',
+      'configuration': 'Debug',
+      'cpu_or_gpu': 'CPU',
+      'cpu_or_gpu_value': 'AVX2',
+      'extra_config': 'SwarmingMSAN',
+      'is_trybot': False,
+      'model': 'GCE',
+      'os': 'Ubuntu',
+      'role': 'Test',
+    },
+    'configuration': 'Debug',
+    'dm_flags': [
+      '--dummy-flags',
+    ],
+    'do_perf_steps': True,
+    'do_test_steps': True,
+    'env': {
+      'GYP_DEFINES':
+          'skia_arch_type=x86_64 skia_gpu=0 skia_warnings_as_errors=0',
+    },
+    'nanobench_flags': [
+      '--dummy-flags',
+    ],
+    'upload_dm_results': False,
+    'upload_perf_results': False,
+  },
   'Test-Ubuntu-GCC-ShuttleA-GPU-GTX550Ti-x86_64-Release-Valgrind': {
     'build_targets': [
       'dm',