Write skia_unittests.isolate and enable swarming for skia_unittests.

skia/skia_unittests.isolate

Index: skia/skia_unittests.isolate
diff --git a/crypto/crypto_unittests.isolate b/skia/skia_unittests.isolate
similarity index 79%
copy from crypto/crypto_unittests.isolate
copy to skia/skia_unittests.isolate
index e09095c142bff3bfe468f9277e430f89bac70713..f88e5a8017635ac4d311f752021cf258f1b70e38 100644
--- a/crypto/crypto_unittests.isolate
+++ b/skia/skia_unittests.isolate
@@ -5,7 +5,7 @@
   'variables': {
     'command': [
       '../testing/test_env.py',
-      '<(PRODUCT_DIR)/crypto_unittests<(EXECUTABLE_SUFFIX)',
+      '<(PRODUCT_DIR)/skia_unittests<(EXECUTABLE_SUFFIX)',
       '--brave-new-test-launcher',
       '--test-launcher-bot-mode',
       '--asan=<(asan)',
@@ -18,7 +18,7 @@
       'variables': {
         'files': [
           '../testing/test_env.py',
-          '<(PRODUCT_DIR)/crypto_unittests<(EXECUTABLE_SUFFIX)',
+          '<(PRODUCT_DIR)/skia_unittests<(EXECUTABLE_SUFFIX)',
         ],
         'read_only': 1,
       },
@@ -26,14 +26,14 @@
     ['OS=="mac" and asan==1 and fastbuild==0', {
       'variables': {
         'files': [
-          '<(PRODUCT_DIR)/crypto_unittests.dSYM/',
+          '<(PRODUCT_DIR)/skia_unittests.dSYM/',
         ],
       },
     }],
     ['OS=="win" and (fastbuild==0 or fastbuild==1)', {
       'variables': {
         'files': [
-          '<(PRODUCT_DIR)/crypto_unittests.exe.pdb',
+          '<(PRODUCT_DIR)/skia_unittests.exe.pdb',
         ],
       },
     }],