Disabled stencil buffer for AA clip mask

http://codereview.appspot.com/6182047/



git-svn-id: http://skia.googlecode.com/svn/trunk@3833 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/GrClipMaskManager.cpp b/src/gpu/GrClipMaskManager.cpp
index ce0f620..f4b0721 100644
--- a/src/gpu/GrClipMaskManager.cpp
+++ b/src/gpu/GrClipMaskManager.cpp
@@ -404,7 +404,7 @@
     GrAssert(SkScalarIsInt(bounds.height()));
 
     GrTextureDesc desc = {
-        kRenderTarget_GrTextureFlagBit,
+        kRenderTarget_GrTextureFlagBit|kNoStencil_GrTextureFlagBit,
         SkScalarCeilToInt(bounds.width()),
         SkScalarCeilToInt(bounds.height()),
         kAlpha_8_GrPixelConfig,