cc: Fix TilePriority::IsHigherPriorityThan to be correct.

cc/resources/tile_priority_unittest.cc

Index: cc/resources/tile_priority_unittest.cc
diff --git a/cc/resources/tile_priority_unittest.cc b/cc/resources/tile_priority_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e134bc976426c744b46548e593fa3a094882d7c8
--- /dev/null
+++ b/cc/resources/tile_priority_unittest.cc
@@ -0,0 +1,45 @@
+// 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.
+
+#include "cc/resources/tile_priority.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace cc {
+
+TEST(TilePriorityTest, IsHigherPriorityThan) {
+  TilePriority now(HIGH_RESOLUTION, TilePriority::NOW, 0);
+  TilePriority close_soon(HIGH_RESOLUTION, TilePriority::SOON, 1);
+  TilePriority far_soon(HIGH_RESOLUTION, TilePriority::SOON, 500);
+  TilePriority close_eventually(HIGH_RESOLUTION, TilePriority::EVENTUALLY, 2);
+  TilePriority far_eventually(HIGH_RESOLUTION, TilePriority::EVENTUALLY, 1000);
+  TilePriority non_ideal_now(NON_IDEAL_RESOLUTION, TilePriority::NOW, 0);
+
+  EXPECT_FALSE(now.IsHigherPriorityThan(now));
+  EXPECT_FALSE(now.IsHigherPriorityThan(non_ideal_now));
+
+  EXPECT_TRUE(now.IsHigherPriorityThan(close_soon));
+  EXPECT_TRUE(now.IsHigherPriorityThan(far_soon));
+  EXPECT_TRUE(now.IsHigherPriorityThan(close_eventually));
+  EXPECT_TRUE(now.IsHigherPriorityThan(far_eventually));
+  EXPECT_TRUE(close_soon.IsHigherPriorityThan(far_soon));
+  EXPECT_TRUE(close_soon.IsHigherPriorityThan(close_eventually));
+  EXPECT_TRUE(close_soon.IsHigherPriorityThan(far_eventually));
+  EXPECT_TRUE(far_soon.IsHigherPriorityThan(close_eventually));
+  EXPECT_TRUE(far_soon.IsHigherPriorityThan(far_eventually));
+  EXPECT_TRUE(close_eventually.IsHigherPriorityThan(far_eventually));
+
+  EXPECT_FALSE(far_eventually.IsHigherPriorityThan(close_eventually));
+  EXPECT_FALSE(far_eventually.IsHigherPriorityThan(far_soon));
+  EXPECT_FALSE(far_eventually.IsHigherPriorityThan(close_soon));
+  EXPECT_FALSE(far_eventually.IsHigherPriorityThan(now));
+  EXPECT_FALSE(far_eventually.IsHigherPriorityThan(non_ideal_now));
+  EXPECT_FALSE(close_eventually.IsHigherPriorityThan(far_soon));
+  EXPECT_FALSE(close_eventually.IsHigherPriorityThan(close_soon));
+  EXPECT_FALSE(close_eventually.IsHigherPriorityThan(now));
+  EXPECT_FALSE(far_soon.IsHigherPriorityThan(close_soon));
+  EXPECT_FALSE(far_soon.IsHigherPriorityThan(now));
+  EXPECT_FALSE(close_soon.IsHigherPriorityThan(now));
+}
+
+}  // namespace cc