skia: Add 'skia_unittests' test suite for this directory.

testing/buildbot/chromium.fyi.json

Index: testing/buildbot/chromium.fyi.json
diff --git a/testing/buildbot/chromium.fyi.json b/testing/buildbot/chromium.fyi.json
index 42cc7c7de5bd191a4927a676f4f4df110171aabf..1dfe59d22df0ac1aed7d10950e78477dfb489497 100644
--- a/testing/buildbot/chromium.fyi.json
+++ b/testing/buildbot/chromium.fyi.json
@@ -48,7 +48,8 @@
       "mojo_public_system_unittests",
       "mojo_public_utility_unittests",
       "mojo_system_unittests",
-      "nacl_loader_unittests"
+      "nacl_loader_unittests",
+      "skia_unittests"
     ],
     "scripts": [
       {
@@ -114,7 +115,8 @@
       "mojo_public_system_unittests",
       "mojo_public_utility_unittests",
       "mojo_system_unittests",
-      "nacl_loader_unittests"
+      "nacl_loader_unittests",
+      "skia_unittests"
     ],
     "scripts": [
       {
@@ -180,7 +182,8 @@
       "mojo_public_system_unittests",
       "mojo_public_utility_unittests",
       "mojo_system_unittests",
-      "nacl_loader_unittests"
+      "nacl_loader_unittests",
+      "skia_unittests"
     ],
     "scripts": [
       {
@@ -246,7 +249,8 @@
       "mojo_public_system_unittests",
       "mojo_public_utility_unittests",
       "mojo_system_unittests",
-      "nacl_loader_unittests"
+      "nacl_loader_unittests",
+      "skia_unittests"
     ],
     "scripts": [
       {
@@ -311,7 +315,8 @@
       "ui_base_unittests",
       "unit_tests",
       "url_unittests",
-      "browser_tests"
+      "browser_tests",
+      "skia_unittests"
     ],
     "scripts": [
       {