Start enabling platform_canvas_unittests on Linux

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")
 import("//third_party/skia/gn/shared_sources.gni")
 
 if (current_cpu == "arm") {
@@ skipping 644 matching lines @@
     "ext/bitmap_platform_device_mac_unittest.cc",
     "ext/convolver_unittest.cc",
     "ext/image_operations_unittest.cc",
     "ext/platform_canvas_unittest.cc",
     "ext/recursive_gaussian_convolution_unittest.cc",
     "ext/skia_memory_dump_provider_unittest.cc",
     "ext/skia_utils_ios_unittest.mm",
     "ext/skia_utils_mac_unittest.mm",
   ]
 
-  if (!is_win && !is_mac) {
+  if (!is_win && !is_mac && !use_cairo) {
     sources -= [ "ext/platform_canvas_unittest.cc" ]
   }
 
   deps = [
     ":skia",
     "//base",
     "//mojo/edk/test:run_all_unittests",
     "//testing/gtest",
     "//ui/gfx",
     "//ui/gfx/geometry",
   ]
 
   if (!is_ios) {
     sources += [ "public/interfaces/test/struct_traits_unittest.cc" ]
     deps += [
       # TODO: Fix this test to not depend on cc.
       "//cc:test_support",
       "//mojo/public/cpp/bindings",
       "//skia/public/interfaces:test_interfaces",
     ]
   }
+
+  if (is_linux) {
+    if (use_pango) {
+      configs += [ "//build/config/linux/pangocairo" ]
+    }
+  }
 }
 
 if (!is_ios) {
   executable("image_operations_bench") {
     sources = [
       "ext/image_operations_bench.cc",
     ]
 
     deps = [
       ":skia",
@@ skipping 11 matching lines @@
 
     deps = [
       ":skia",
       "//base",
       "//base/test:test_support",
       "//build/config/sanitizers:deps",
       "//build/win:default_exe_manifest",
     ]
   }
 }