Add GN isolate support for a bunch of unittests.

skia/BUILD.gn

 # Copyright (c) 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 if (current_cpu == "arm") {
   import("//build/config/arm.gni")
 }
@@ skipping 563 matching lines @@
   configs -= [ "//build/config/compiler:chromium_code" ]
   configs += [
     ":skia_config",
     ":skia_library_config",
     "//build/config/compiler:no_chromium_code",
   ]
 
   visibility = [ ":skia" ]
 }
 
+# TODO(GYP): Delete this after we've converted everything to GN.
+# The _run targets exist only for compatibility w/ GYP.
+group("skia_unittests_run") {
+  testonly = true
+  deps = [
+    ":skia_unittests",
+  ]
+}
+
 test("skia_unittests") {
   sources = [
     "ext/analysis_canvas_unittest.cc",
     "ext/bitmap_platform_device_mac_unittest.cc",
     "ext/convolver_unittest.cc",
     "ext/image_operations_unittest.cc",
     "ext/pixel_ref_utils_unittest.cc",
     "ext/platform_canvas_unittest.cc",
     "ext/recursive_gaussian_convolution_unittest.cc",
     "ext/refptr_unittest.cc",
@@ skipping 35 matching lines @@
       "tools/filter_fuzz_stub/filter_fuzz_stub.cc",
     ]
 
     deps = [
       ":skia",
       "//base",
       "//base/test:test_support",
     ]
   }
 }