Don't abort analytic clipping if using MSAA until elements are examined

src/gpu/GrClipMaskManager.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #ifndef GrClipMaskManager_DEFINED
 #define GrClipMaskManager_DEFINED
 
 #include "GrPipelineBuilder.h"
@@ skipping 71 matching lines @@
         // Clip against the existing representation of the clip in the high bit
         // of the stencil buffer.
         kRespectClip_StencilClipMode,
         // Neither writing to nor clipping against the clip bit.
         kIgnoreClip_StencilClipMode,
     };
 
     // Attempts to install a series of coverage effects to implement the clip. Return indicates
     // whether the element list was successfully converted to processors. *fp may be nullptr even
     // when the function succeeds because all the elements were ignored. TODO: Make clip reduction
-    // bounds-aware and stop checking bounds in this function.
+    // bounds-aware and stop checking bounds in this function. Similarly, we shouldn't need to pass
+    // abortIfAA, but we don't yet know if all the AA elements will be eliminated.
     bool getAnalyticClipProcessor(const GrReducedClip::ElementList&,
+                                  bool abortIfAA,
                                   SkVector& clipOffset,
                                   const SkRect* devBounds,
                                   const GrFragmentProcessor** fp);
 
     // Draws the clip into the stencil buffer
     bool createStencilClipMask(GrRenderTarget*,
                                int32_t elementsGenID,
                                GrReducedClip::InitialState initialState,
                                const GrReducedClip::ElementList& elements,
                                const SkIRect& clipSpaceIBounds,
@@ skipping 62 matching lines @@
     GrTexture* createCachedMask(int width, int height, const GrUniqueKey& key, bool renderTarget);
 
     static const int kMaxAnalyticElements = 4;
 
     GrDrawTarget*   fDrawTarget;    // This is our owning draw target.
     StencilClipMode fClipMode;
 
     typedef SkNoncopyable INHERITED;
 };
 #endif // GrClipMaskManager_DEFINED