replace deprecated SkScalarRound/Floor/Ceil calls with more explicit variants

cc/output/software_renderer.cc

 // Copyright 2012 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/output/software_renderer.h"
 
 #include "base/debug/trace_event.h"
 #include "cc/base/math_util.h"
 #include "cc/output/compositor_frame.h"
 #include "cc/output/compositor_frame_ack.h"
@@ skipping 18 matching lines @@
 #include "third_party/skia/include/effects/SkLayerRasterizer.h"
 #include "ui/gfx/rect_conversions.h"
 #include "ui/gfx/skia_util.h"
 #include "ui/gfx/transform.h"
 
 namespace cc {
 
 namespace {
 
 static inline bool IsScalarNearlyInteger(SkScalar scalar) {
-  return SkScalarNearlyZero(scalar - SkScalarRound(scalar));
+  return SkScalarNearlyZero(scalar - SkScalarRoundToScalar(scalar));
 }
 
 bool IsScaleAndIntegerTranslate(const SkMatrix& matrix) {
   return IsScalarNearlyInteger(matrix[SkMatrix::kMTransX]) &&
          IsScalarNearlyInteger(matrix[SkMatrix::kMTransY]) &&
          SkScalarNearlyZero(matrix[SkMatrix::kMSkewX]) &&
          SkScalarNearlyZero(matrix[SkMatrix::kMSkewY]) &&
          SkScalarNearlyZero(matrix[SkMatrix::kMPersp0]) &&
          SkScalarNearlyZero(matrix[SkMatrix::kMPersp1]) &&
          SkScalarNearlyZero(matrix[SkMatrix::kMPersp2] - 1.0f);
@@ skipping 552 matching lines @@
     return;
   visible_ = visible;
 
   if (visible_)
     EnsureBackbuffer();
   else
     DiscardBackbuffer();
 }
 
 }  // namespace cc