Move GrReducedClip to its own files.

R=robertphillips@google.com
Review URL: https://codereview.appspot.com/6891045

git-svn-id: http://skia.googlecode.com/svn/trunk@6686 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/tests/ClipStackTest.cpp b/tests/ClipStackTest.cpp
index 0f6e266..3127a71 100644
--- a/tests/ClipStackTest.cpp
+++ b/tests/ClipStackTest.cpp
@@ -7,7 +7,7 @@
  */
 #include "Test.h"
 #if SK_SUPPORT_GPU
-    #include "GrClipMaskManager.h"
+    #include "GrReducedClip.h"
 #endif
 #include "SkClipStack.h"
 #include "SkPath.h"