Recycle stencil buffers across render targets.

src/gpu/gl/GrGLGpu.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGLGpu_DEFINED
 #define GrGLGpu_DEFINED
 
@@ skipping 104 matching lines @@
     void onResetContext(uint32_t resetBits) SK_OVERRIDE;
 
     GrTexture* onCreateTexture(const GrSurfaceDesc& desc, bool budgeted, const void* srcData,
                                size_t rowBytes) SK_OVERRIDE;
     GrTexture* onCreateCompressedTexture(const GrSurfaceDesc& desc, bool budgeted,
                                          const void* srcData) SK_OVERRIDE;
     GrVertexBuffer* onCreateVertexBuffer(size_t size, bool dynamic) SK_OVERRIDE;
     GrIndexBuffer* onCreateIndexBuffer(size_t size, bool dynamic) SK_OVERRIDE;
     GrTexture* onWrapBackendTexture(const GrBackendTextureDesc&) SK_OVERRIDE;
     GrRenderTarget* onWrapBackendRenderTarget(const GrBackendRenderTargetDesc&) SK_OVERRIDE;
-    bool createStencilBufferForRenderTarget(GrRenderTarget* rt, bool budgeted,
-                                            int width, int height) SK_OVERRIDE;
+    bool createStencilBufferForRenderTarget(GrRenderTarget* rt, int width, int height) SK_OVERRIDE;
     bool attachStencilBufferToRenderTarget(GrStencilBuffer* sb, GrRenderTarget* rt) SK_OVERRIDE;
 
     void onClear(GrRenderTarget*, const SkIRect* rect, GrColor color,
                  bool canIgnoreRect) SK_OVERRIDE;
 
     void onClearStencilClip(GrRenderTarget*, const SkIRect& rect, bool insideClip) SK_OVERRIDE;
 
     bool onReadPixels(GrRenderTarget* target,
                       int left, int top,
                       int width, int height,
@@ skipping 327 matching lines @@
 
     // we record what stencil format worked last time to hopefully exit early
     // from our loop that tries stencil formats and calls check fb status.
     int fLastSuccessfulStencilFmtIdx;
 
     typedef GrGpu INHERITED;
     friend class GrGLPathRendering; // For accessing setTextureUnit.
 };
 
 #endif