Renamed contains in the rectangle class to containsRectangle.

sdk/lib/math/rectangle.dart

Index: sdk/lib/math/rectangle.dart
diff --git a/sdk/lib/math/rectangle.dart b/sdk/lib/math/rectangle.dart
index 763a251b739a2c766eb94d3693723321723bbe8e..0aa52ff79d1e61f707efc98a659124680c505765 100644
--- a/sdk/lib/math/rectangle.dart
+++ b/sdk/lib/math/rectangle.dart
@@ -87,7 +87,7 @@ abstract class _RectangleBase<T extends num> {
   /**
    * Tests whether `this` entirely contains [another].
    */
-  bool contains(Rectangle<num> another) {
+  bool containsRectangle(Rectangle<num> another) {
     return left <= another.left &&
            left + width >= another.left + another.width &&
            top <= another.top &&