Move oval and rect renderer includes to private interface

R=bsalomon@google.com, robertphillips@google.com

Review URL: https://codereview.chromium.org/23513016

git-svn-id: http://skia.googlecode.com/svn/trunk@11132 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/include/gpu/GrContext.h b/include/gpu/GrContext.h
index ae932bd..ae549b6 100644
--- a/include/gpu/GrContext.h
+++ b/include/gpu/GrContext.h
@@ -9,7 +9,6 @@
 #define GrContext_DEFINED
 
 #include "GrColor.h"
-#include "GrAARectRenderer.h"
 #include "GrClipData.h"
 #include "SkMatrix.h"
 #include "GrPaint.h"
@@ -19,6 +18,7 @@
 #include "GrRefCnt.h"
 #include "GrTexture.h"
 
+class GrAARectRenderer;
 class GrAutoScratchTexture;
 class GrDrawState;
 class GrDrawTarget;