Enable webrtc and most of blink and content in the Mac GN build.

cc/blink/BUILD.gn

Index: cc/blink/BUILD.gn
diff --git a/cc/blink/BUILD.gn b/cc/blink/BUILD.gn
index 9fd2f333ae5b77a9f452caf11ffea152d6e59405..fac991b462d2faf8d47032407f35b5728abf1e3f 100644
--- a/cc/blink/BUILD.gn
+++ b/cc/blink/BUILD.gn
@@ -65,22 +65,25 @@ component("blink") {
 }
 
 # GYP version: //cc/blink/cc_blink_tests.gyp:cc_blink_unittests
-test("cc_blink_unittests") {
-  deps = [
-    ":blink",
-    "//base/test:run_all_unittests",
-    "//base/third_party/dynamic_annotations",
-    "//skia",
-    "//testing/gtest",
-    "//ui/gfx/geometry",
-    "//ui/gfx:test_support",
-    "//cc",
-    "//cc:test_support",
-  ]
+# TODO(GYP): make linking work on the mac.
+if (!is_mac) {
+  test("cc_blink_unittests") {
+    deps = [
+      ":blink",
+      "//base/test:run_all_unittests",
+      "//base/third_party/dynamic_annotations",
+      "//skia",
+      "//testing/gtest",
+      "//ui/gfx/geometry",
+      "//ui/gfx:test_support",
+      "//cc",
+      "//cc:test_support",
+    ]
 
-  sources = [
-    "web_animation_unittest.cc",
-    "web_float_animation_curve_unittest.cc",
-    "web_layer_impl_fixed_bounds_unittest.cc",
-  ]
+    sources = [
+      "web_animation_unittest.cc",
+      "web_float_animation_curve_unittest.cc",
+      "web_layer_impl_fixed_bounds_unittest.cc",
+    ]
+  }
 }