Modifies GetPlatformImageColor() to check the color of a given point.

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 "ui/gfx/image/image.h"
 #include "ui/gfx/image/image_skia.h"
 #include "ui/gfx/image/image_unittest_util.h"
 
 #if defined(TOOLKIT_GTK)
@@ skipping 162 matching lines @@
   SkAutoLockPixels auto_lock(*bitmap);
   gt::CheckColor(bitmap->getColor(10, 10), true);
 }
 
 // TODO(rohitrao): This test needs an iOS implementation of
 // GetPlatformImageColor().
 #if !defined(OS_IOS)
 TEST_F(ImageTest, PNGDecodeToPlatformFailure) {
   std::vector<unsigned char> png(100, 0);
   gfx::Image image(&png.front(), png.size());
-  gt::CheckColor(gt::GetPlatformImageColor(gt::ToPlatformType(image)), true);
+  gt::CheckColor(gt::GetPlatformImageColor(gt::ToPlatformType(image), 10, 10),
+                 true);
 }
 #endif
 
 TEST_F(ImageTest, SkiaToPlatform) {
   gfx::Image image(gt::CreateBitmap(25, 25));
   const size_t kRepCount = kUsesSkiaNatively ? 1U : 2U;
 
   EXPECT_TRUE(image.HasRepresentation(gfx::Image::kImageRepSkia));
   if (!kUsesSkiaNatively)
     EXPECT_FALSE(image.HasRepresentation(gt::GetPlatformRepresentationType()));
@@ skipping 223 matching lines @@
     image = gfx::Image(gfx::ImageSkiaRep(bitmap, ui::SCALE_FACTOR_100P));
   }
   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