ozone: Support building without cairo

ui/gfx/image/image_unittest.cc

 // Copyright (c) 2012 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.
 
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "third_party/skia/include/core/SkPaint.h"
 #include "ui/gfx/image/image.h"
 #include "ui/gfx/image/image_png_rep.h"
 #include "ui/gfx/image/image_skia.h"
 #include "ui/gfx/image/image_unittest_util.h"
 
 #if defined(TOOLKIT_GTK)
 #include <gtk/gtk.h>
 #include "ui/gfx/gtk_util.h"
 #elif defined(OS_IOS)
 #include "base/mac/foundation_util.h"
 #include "skia/ext/skia_utils_ios.h"
 #elif defined(OS_MACOSX)
 #include "base/mac/mac_util.h"
 #include "skia/ext/skia_utils_mac.h"
 #endif
 
 namespace {
 
-#if defined(TOOLKIT_VIEWS) || defined(OS_ANDROID)
+#if defined(TOOLKIT_VIEWS) || defined(OS_ANDROID) || \
+    (defined(OS_LINUX) && !defined(USE_CAIRO))
 const bool kUsesSkiaNatively = true;
 #else
 const bool kUsesSkiaNatively = false;
 #endif
 
 class ImageTest : public testing::Test {
  public:
   ImageTest() {
     std::vector<float> scales;
     scales.push_back(1.0f);
@@ skipping 651 matching lines @@
         gfx::ImageSkiaRep(bitmap, 1.0f)));
   }
   EXPECT_TRUE(!image.ToSkBitmap()->isNull());
 }
 
 // Integration tests with UI toolkit frameworks require linking against the
 // Views library and cannot be here (ui_unittests doesn't include it). They
 // instead live in /chrome/browser/ui/tests/ui_gfx_image_unittest.cc.
 
 }  // namespace