skip call to clip::apply when clip is wide open

src/gpu/GrBlurUtils.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrBlurUtils.h"
 #include "GrDrawContext.h"
 #include "GrCaps.h"
 #include "GrContext.h"
 #include "effects/GrSimpleTextureEffect.h"
 #include "GrStyle.h"
 #include "GrTexture.h"
 #include "GrTextureProvider.h"
 #include "SkDraw.h"
 #include "SkGrPriv.h"
 #include "SkMaskFilter.h"
 #include "SkPaint.h"
+#include "SkTLazy.h"
 
 static bool clip_bounds_quick_reject(const SkIRect& clipBounds, const SkIRect& rect) {
     return clipBounds.isEmpty() || rect.isEmpty() || !SkIRect::Intersects(clipBounds, rect);
 }
 
 // Draw a mask using the supplied paint. Since the coverage/geometry
 // is already burnt into the mask this boils down to a rect draw.
 // Return true if the mask was successfully drawn.
 static bool draw_mask(GrDrawContext* drawContext,
                       const GrClip& clip,
@@ skipping 262 matching lines @@
     }
 
     if (paint.getMaskFilter()) {
         draw_path_with_mask_filter(context, drawContext, clip, &grPaint, viewMatrix,
                                    paint.getMaskFilter(), style,
                                    path, pathIsMutable);
     } else {
         drawContext->drawPath(clip, grPaint, viewMatrix, *path, style);
     }
 }