Remove cullRect() from PaintOpBuffer.

cc/paint/paint_op_buffer.cc

 // Copyright 2017 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 "cc/paint/paint_op_buffer.h"
 
 #include "base/containers/stack_container.h"
 #include "cc/paint/display_item_list.h"
 #include "cc/paint/paint_record.h"
 #include "third_party/skia/include/core/SkAnnotation.h"
@@ skipping 564 matching lines @@
 }
 
 DrawTextBlobOp::DrawTextBlobOp(sk_sp<SkTextBlob> blob,
                                SkScalar x,
                                SkScalar y,
                                const PaintFlags& flags)
     : PaintOpWithFlags(flags), blob(std::move(blob)), x(x), y(y) {}
 
 DrawTextBlobOp::~DrawTextBlobOp() = default;
 
-PaintOpBuffer::PaintOpBuffer() : cull_rect_(SkRect::MakeEmpty()) {}
-
-PaintOpBuffer::PaintOpBuffer(const SkRect& cull_rect) : cull_rect_(cull_rect) {}
+PaintOpBuffer::PaintOpBuffer() = default;
 
 PaintOpBuffer::~PaintOpBuffer() {
   Reset();
 }
 
 void PaintOpBuffer::Reset() {
   for (auto* op : Iterator(this)) {
     auto func = g_destructor_functions[op->type];
     if (func)
       func(op);
@@ skipping 137 matching lines @@
   return std::make_pair(op, skip);
 }
 
 void PaintOpBuffer::ShrinkToFit() {
   if (!used_ || used_ == reserved_)
     return;
   ReallocBuffer(used_);
 }
 
 }  // namespace cc