Convert everything in the Sky API from degrees to radians.

sky/tests/resources/display_list.dart

 
 import 'package:sky/framework/rendering/object.dart';
 import 'package:sky/framework/rendering/box.dart';
 import 'dart:sky' as sky;
 
 typedef void Logger (String s);
 
 class TestDisplayList extends RenderObjectDisplayList {
   TestDisplayList(double width, double height, this.logger, { this.indent: '' }) :
     this.width = width,
@@ skipping 28 matching lines @@
   }
 
   void translate(double dx, double dy) {
     log("translate($dx, $dy)");
   }
 
   void scale(double sx, double sy) {
     log("scale($sx, $sy)");
   }
 
-  void rotateDegrees(double degrees) {
-    log("rotateDegrees($degrees)");
+  void rotate(double radians) {
+    log("rotate($radians)");
   }
 
   void skew(double sx, double sy) {
     log("skew($sx, $sy)");
   }
 
   void concat(List<double> matrix9) {
     log("concat($matrix9)");
   }
 
@@ skipping 75 matching lines @@
   void set root(RenderBox value) {
     _renderView.child = value;
   }
   void _beginFrame(double timeStamp) {
     RenderObject.flushLayout();
     _renderView.paintFrame();
     print(_renderView.lastPaint); // TODO(ianh): figure out how to make this fit the unit testing framework better
   }
 
 }