Get more of the mac GN build working.

Source/platform/BUILD.gn

 # Copyright 2014 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/ui.gni")
 import("//third_party/WebKit/Source/build/scripts/scripts.gni")
 import("//third_party/WebKit/Source/config.gni")
 import("//third_party/WebKit/Source/platform/platform.gni")
 import("//third_party/WebKit/Source/platform/platform_generated.gni")
 
 # Most targets in this file are private actions so use that as the default.
 visibility = [ ":*" ]
 
-heap_gypi = exec_script(
-    "//build/gypi_to_gn.py",
-    [ rebase_path("heap/blink_heap.gypi") ],
-    "scope",
-    [ "heap/blink_heap.gypi" ])
+if (!is_mac) {
+  # TODO(GYP): can't link Blink binaries yet on mac.
+  heap_gypi = exec_script(
+      "//build/gypi_to_gn.py",
+      [ rebase_path("heap/blink_heap.gypi") ],
+      "scope",
+      [ "heap/blink_heap.gypi" ])
+}
 
 blink_platform_neon_files = [
   "graphics/cpu/arm/WebGLImageConversionNEON.h",
 ]
 
 # blink_common in blink_platform.gyp
 component("blink_common") {
   visibility = []  # Allow re-assignment of list.
   visibility = [ "//third_party/WebKit/*" ]
   sources = [
@@ skipping 275 matching lines @@
   if (use_webaudio_ffmpeg) {
     include_dirs += [ "//third_party/ffmpeg" ]
     deps += [ "//third_party/ffmpeg" ]
   }
   if (use_openmax_dl_fft) {
     include_dirs += [ "//third_party/openmax_dl" ]
     deps += [ "//third_party/openmax_dl/dl" ]
   }
 }
 
-test("heap_unittests") {
-  visibility = []  # Allow re-assignment of list.
-  visibility = [ "//third_party/WebKit/*" ]
-  output_name = "blink_heap_unittests"
+if (!is_mac) {
+  # TODO(GYP): Can't link Blink binaries yet.
+  test("heap_unittests") {
+    visibility = []  # Allow re-assignment of list.
+    visibility = [ "//third_party/WebKit/*" ]
+    output_name = "blink_heap_unittests"
 
-  sources = rebase_path(heap_gypi.platform_heap_test_files, ".", "heap")
-  sources += [ "heap/RunAllTests.cpp" ]
+    sources = rebase_path(heap_gypi.platform_heap_test_files, ".", "heap")
+    sources += [ "heap/RunAllTests.cpp" ]
 
-  configs += [
-    "//third_party/WebKit/Source/wtf:wtf_config",
-    "//third_party/WebKit/Source:config",
-  ]
+    configs += [
+      "//third_party/WebKit/Source/wtf:wtf_config",
+      "//third_party/WebKit/Source:config",
+    ]
 
-  deps = [
-    ":platform",
-    "//base",
-    "//base/allocator",
-    "//base/test:test_support",
-    "//testing/gmock",
-    "//testing/gtest",
-    "//third_party/WebKit/Source/wtf",
-    "//third_party/WebKit/Source/wtf:test_support",
-    "//content/test:test_support",
-  ]
-}
+    deps = [
+      ":platform",
+      "//base",
+      "//base/allocator",
+      "//base/test:test_support",
+      "//testing/gmock",
+      "//testing/gtest",
+      "//third_party/WebKit/Source/wtf",
+      "//third_party/WebKit/Source/wtf:test_support",
+      "//content/test:test_support",
+    ]
+  }
 
-test("platform_unittests") {
-  visibility = []  # Allow re-assignment of list.
-  visibility = [ "//third_party/WebKit/*" ]
-  output_name = "blink_platform_unittests"
+  test("platform_unittests") {
+    visibility = []  # Allow re-assignment of list.
+    visibility = [ "//third_party/WebKit/*" ]
+    output_name = "blink_platform_unittests"
 
-  sources = platform_test_files
+    sources = platform_test_files
 
-  sources += [ "testing/RunAllTests.cpp" ]
+    sources += [ "testing/RunAllTests.cpp" ]
 
-  configs += [
-    "//third_party/WebKit/Source/wtf:wtf_config",
-    "//third_party/WebKit/Source:config",
-  ]
+    configs += [
+      "//third_party/WebKit/Source/wtf:wtf_config",
+      "//third_party/WebKit/Source:config",
+    ]
 
-  deps = [
-    ":blink_common",
-    ":platform",
-    "//base",
-    "//base/allocator",
-    "//base/test:test_support",
-    "//skia",
-    "//testing/gmock",
-    "//testing/gtest",
-    "//third_party/WebKit/Source/wtf",
-    "//third_party/WebKit/Source/wtf:test_support",
-    "//url",
-  ]
+    deps = [
+      ":blink_common",
+      ":platform",
+      "//base",
+      "//base/allocator",
+      "//base/test:test_support",
+      "//skia",
+      "//testing/gmock",
+      "//testing/gtest",
+      "//third_party/WebKit/Source/wtf",
+      "//third_party/WebKit/Source/wtf:test_support",
+      "//url",
+    ]
 
-  defines = [
-    "INSIDE_BLINK",
-  ]
+    defines = [
+      "INSIDE_BLINK",
+    ]
 
-  include_dirs = [
-    "$root_gen_dir/blink",
-  ]
+    include_dirs = [
+      "$root_gen_dir/blink",
+    ]
+  }
 }
 
 
 if (cpu_arch == "arm") {
   source_set("blink_arm_neon") {
     sources = blink_platform_neon_files
 
     # The *NEON.cpp files fail to compile when -mthumb is passed. Force
     # them to build in ARM mode.
     # See https://bugs.webkit.org/show_bug.cgi?id=62916.
     # TODO(GYP)
     #'cflags': ['-marm'],
     #    'conditions': [
     #      ['OS=="android"', {
     #        'cflags!': ['-mthumb'],
     #      }],
     #    ],
 
     deps = [ ":blink_common" ]
   }
 }