Update AnalysisCanvas drawRect early-exit logic to match SkCanvas.cpp again.

skia/ext/analysis_canvas.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
 #include "skia/ext/analysis_canvas.h"
 #include "third_party/skia/include/core/SkDraw.h"
 #include "third_party/skia/include/core/SkRRect.h"
 #include "third_party/skia/include/core/SkShader.h"
@@ skipping 92 matching lines @@
 void AnalysisCanvas::drawPoints(SkCanvas::PointMode mode,
                                 size_t count,
                                 const SkPoint points[],
                                 const SkPaint& paint) {
   is_solid_color_ = false;
   is_transparent_ = false;
   ++draw_op_count_;
 }
 
 void AnalysisCanvas::drawRect(const SkRect& rect, const SkPaint& paint) {
-  // This recreates the early-exit logic in SkCanvas.cpp, which aborts early
-  // if the paint will "draw nothing".
+  // This recreates the early-exit logic in SkCanvas.cpp.
+  SkRect scratch;
+  if (paint.canComputeFastBounds() &&
+      quickReject(paint.computeFastBounds(rect, &scratch))) {
+    return;
+  }
+
+  // An extra no-op check SkCanvas.cpp doesn't do.
   if (paint.nothingToDraw())
     return;
 
   bool does_cover_canvas = IsFullQuad(this, rect);
 
   SkXfermode::Mode xfermode;
   SkXfermode::AsMode(paint.getXfermode(), &xfermode);
 
   // This canvas will become transparent if the following holds:
   // - The quad is a full tile quad
@@ skipping 310 matching lines @@
       force_not_transparent_stack_level_ = kNoLayer;
     }
   }
 
   INHERITED::willRestore();
 }
 
 }  // namespace skia