fix float->int warning



git-svn-id: http://skia.googlecode.com/svn/trunk@870 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/views/SkWindow.cpp b/src/views/SkWindow.cpp
index dbc1eea..7aefe14 100644
--- a/src/views/SkWindow.cpp
+++ b/src/views/SkWindow.cpp
@@ -124,7 +124,9 @@
         fMatrix.mapRect(&devR, *localR);
         devR.round(&ir);
     } else {
-        ir.set(0, 0, this->width(), this->height());
+        ir.set(0, 0,
+			   SkScalarRound(this->width()),
+			   SkScalarRound(this->height()));
     }
 	fDirtyRgn.op(ir, SkRegion::kUnion_Op);