Unify geometry test printers in a test support target.

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("//testing/test.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")
@@ skipping 301 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" ]
   }
 }
 
+source_set("test_support") {
+  sources = platform_test_support_files
+  visibility += [ "//third_party/WebKit/*" ]
+
+  configs += [
+    "//third_party/WebKit/Source:config",
+    "//third_party/WebKit/Source:inside_blink",
+    "//third_party/WebKit/Source:non_test_config",
+  ]
+
+  deps = [
+    ":platform",
+  ]
+}
+
 if (!is_mac) {
   # TODO(GYP): Can't link Blink binaries yet.
   test("heap_unittests") {
     visibility = []  # Allow re-assignment of list.
     visibility = [ "*" ]
     output_name = "blink_heap_unittests"
 
     sources = rebase_path(heap_gypi.platform_heap_test_files, ".", "heap")
     sources += [ "heap/RunAllTests.cpp" ]
 
@@ skipping 29 matching lines @@
     sources += [ "testing/RunAllTests.cpp" ]
 
     configs += [
       "//third_party/WebKit/Source/wtf:wtf_config",
       "//third_party/WebKit/Source:config",
     ]
 
     deps = [
       ":blink_common",
       ":platform",
+      ":test_support",
       "//base",
       "//base/allocator",
       "//base/test:test_support",
       "//skia",
       "//testing/gmock",
       "//testing/gtest",
       "//third_party/harfbuzz-ng",
       "//third_party/WebKit/Source/wtf",
       "//third_party/WebKit/Source/wtf:test_support",
       "//url",
@@ skipping 29 matching lines @@
   }
 }
 
 
 if (current_cpu == "x86" || current_cpu == "x64") {
   source_set("blink_x86_sse") {
     sources = blink_platform_sse_files
     deps = [ ":blink_common" ]
   }
 }