Add getRectCount to SkRegtion

include/core/SkRegion.h

Index: include/core/SkRegion.h
===================================================================
--- include/core/SkRegion.h	(revision 10113)
+++ include/core/SkRegion.h	(working copy)
@@ -86,6 +86,12 @@
     const SkIRect& getBounds() const { return fBounds; }
 
     /**
+     *  Returns the number of rects that comprise this region.

[reed1, 2013/07/17 19:14:36]

I'd like to make the definition a little fuzzier, so we're not married to this
returning exactly the same number of rects that Iter might return. How about...

/**
Returns a value that grows approximately linearly with the number of intervals
comprised in the region. Empty will return 0, Rect will return 1, Complex will
return some value > 1. Use this to compare two regions, where the larger count
likely indicates a more complex region.
*/

int computeRegionComplexity() const;

[vmpstr, 2013/07/17 19:59:08]

Done.

+     *  Experimental: please do not use this unless absolutely necessary.
+     */
+    int getRectCount() const;
+
+    /**
      *  Returns true if the region is non-empty, and if so, appends the
      *  boundary(s) of the region to the specified path.
      *  If the region is empty, returns false, and path is left unmodified.