Remove clipRegion from the public API.

This API is difficult to support for printing and has other negative
effects as it does not respect the current matrix/clip.

Test: compile
Bug: 14650725
Change-Id: I71f9bd687d446c7ce8910d755421aad8e09458db
diff --git a/api/test-removed.txt b/api/test-removed.txt
index 35b4859..d7a8bce 100644
--- a/api/test-removed.txt
+++ b/api/test-removed.txt
@@ -78,6 +78,11 @@
     enum_constant public static final android.graphics.AvoidXfermode.Mode TARGET;
   }
 
+  public class Canvas {
+    method public deprecated boolean clipRegion(android.graphics.Region, android.graphics.Region.Op);
+    method public deprecated boolean clipRegion(android.graphics.Region);
+  }
+
   public deprecated class LayerRasterizer extends android.graphics.Rasterizer {
     ctor public LayerRasterizer();
     method public void addLayer(android.graphics.Paint, float, float);