Fixes rounding bug in transform. This is needed to avoid rounding

views/view_unittest.cc

 // Copyright (c) 2011 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 <map>
 
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "ui/base/clipboard/clipboard.h"
@@ skipping 1961 matching lines @@
     gfx::Point point(5, 5);
     View::ConvertPointToView(child_child, child, &point);
     EXPECT_EQ(42, point.x());
     EXPECT_EQ(48, point.y());
 
     point.SetPoint(42, 48);
     View::ConvertPointToView(child, child_child, &point);
     EXPECT_EQ(5, point.x());
     EXPECT_EQ(5, point.y());
   }
+
+  // Conversions from top_view to child with a value that should be negative.
+  // This ensures we don't round up with negative numbers.
+  {
+    gfx::Point point(6, 18);
+    View::ConvertPointToView(&top_view, child, &point);
+    EXPECT_EQ(-1, point.x());
+    EXPECT_EQ(-1, point.y());
+  }
 }
 
 TEST_F(ViewTest, Contains) {
   TestView v1;
   TestView* v2 = new TestView();
   TestView* v3 = new TestView();
 
   v1.AddChildView(v2);
   v2->AddChildView(v3);
 
   EXPECT_FALSE(v1.Contains(NULL));
   EXPECT_TRUE(v1.Contains(&v1));
   EXPECT_TRUE(v1.Contains(v2));
   EXPECT_TRUE(v1.Contains(v3));
   EXPECT_FALSE(v2->Contains(NULL));
   EXPECT_TRUE(v2->Contains(v2));
   EXPECT_FALSE(v2->Contains(&v1));
   EXPECT_TRUE(v2->Contains(v3));
   EXPECT_FALSE(v3->Contains(NULL));
   EXPECT_TRUE(v3->Contains(v3));
   EXPECT_FALSE(v3->Contains(&v1));
   EXPECT_FALSE(v3->Contains(v2));
 }
 
 }  // namespace views