cc: Define Region::Contains() to be A contains B if all points in B are also in A.

cc/region_unittest.cc

 // Copyright 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 "config.h"
 
 #include "cc/region.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 206 matching lines @@
 
 #define TEST_CONTAINS(a, b)                     \
   {                                             \
     Region ar = a;                              \
     Region br = b;                              \
     EXPECT_TRUE(ar.Contains(br));               \
     EXPECT_TRUE(ar.Contains(b));                \
   }
 
 TEST(RegionTest, ContainsRegion) {
-  TEST_NO_CONTAINS(gfx::Rect(), gfx::Rect());
+  TEST_CONTAINS(gfx::Rect(), gfx::Rect());
+  TEST_CONTAINS(gfx::Rect(0, 0, 1, 1), gfx::Rect());
+  TEST_CONTAINS(gfx::Rect(10, 10, 1, 1), gfx::Rect());
+
   TEST_NO_CONTAINS(gfx::Rect(), gfx::Rect(0, 0, 1, 1));
   TEST_NO_CONTAINS(gfx::Rect(), gfx::Rect(1, 1, 1, 1));
 
   TEST_NO_CONTAINS(gfx::Rect(10, 10, 1, 1), gfx::Rect(11, 10, 1, 1));
   TEST_NO_CONTAINS(gfx::Rect(10, 10, 1, 1), gfx::Rect(10, 11, 1, 1));
   TEST_NO_CONTAINS(gfx::Rect(10, 10, 1, 1), gfx::Rect(9, 10, 1, 1));
   TEST_NO_CONTAINS(gfx::Rect(10, 10, 1, 1), gfx::Rect(10, 9, 1, 1));
   TEST_NO_CONTAINS(gfx::Rect(10, 10, 1, 1), gfx::Rect(9, 9, 2, 2));
   TEST_NO_CONTAINS(gfx::Rect(10, 10, 1, 1), gfx::Rect(10, 9, 2, 2));
   TEST_NO_CONTAINS(gfx::Rect(10, 10, 1, 1), gfx::Rect(9, 10, 2, 2));
@@ skipping 173 matching lines @@
   EXPECT_TRUE(SkIRect::MakeXYWH(10, 10, 10, 0).isEmpty());
   EXPECT_TRUE(SkIRect::MakeXYWH(10, 10, 0, 10).isEmpty());
   EXPECT_TRUE(SkIRect::MakeXYWH(-10, 10, 10, 0).isEmpty());
   EXPECT_TRUE(SkIRect::MakeXYWH(-10, 10, 0, 10).isEmpty());
   EXPECT_FALSE(SkIRect::MakeXYWH(-1, -1, 1, 1).isEmpty());
   EXPECT_FALSE(SkIRect::MakeXYWH(0, 0, 1, 1).isEmpty());
   EXPECT_FALSE(SkIRect::MakeXYWH(0, 0, 2, 2).isEmpty());
 }
 
 }  // namespace