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

ui/gfx/platform_font_pango.cc

 // Copyright (c) 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 "ui/gfx/platform_font_pango.h"
 
 #include <fontconfig/fontconfig.h>
 #include <pango/pango.h>
 
 #include <algorithm>
@@ skipping 172 matching lines @@
 int PlatformFontPango::GetBaseline() const {
   return ascent_pixels_;
 }
 
 int PlatformFontPango::GetCapHeight() const {
   return cap_height_pixels_;
 }
 
 int PlatformFontPango::GetAverageCharacterWidth() const {
   const_cast<PlatformFontPango*>(this)->InitPangoMetrics();
-  return SkScalarRound(average_width_pixels_);
+  return SkScalarRoundToInt(average_width_pixels_);
 }
 
 int PlatformFontPango::GetStringWidth(const base::string16& text) const {
   return Canvas::GetStringWidth(text,
                                 Font(const_cast<PlatformFontPango*>(this)));
 }
 
 int PlatformFontPango::GetExpectedTextWidth(int length) const {
   double char_width = const_cast<PlatformFontPango*>(this)->GetAverageWidth();
   return round(static_cast<float>(length) * char_width);
@@ skipping 126 matching lines @@
   pango_metrics_inited_ = false;
   average_width_pixels_ = 0.0f;
   underline_position_pixels_ = 0.0f;
   underline_thickness_pixels_ = 0.0f;
 
   SkPaint paint;
   SkPaint::FontMetrics metrics;
   PaintSetup(&paint);
   paint.getFontMetrics(&metrics);
 
-  ascent_pixels_ = SkScalarCeil(-metrics.fAscent);
-  height_pixels_ = ascent_pixels_ + SkScalarCeil(metrics.fDescent);
-  cap_height_pixels_ = SkScalarCeil(metrics.fCapHeight);
+  ascent_pixels_ = SkScalarCeilToInt(-metrics.fAscent);
+  height_pixels_ = ascent_pixels_ + SkScalarCeilToInt(metrics.fDescent);
+  cap_height_pixels_ = SkScalarCeilToInt(metrics.fCapHeight);
 }
 
 void PlatformFontPango::InitFromPlatformFont(const PlatformFontPango* other) {
   typeface_ = other->typeface_;
   font_family_ = other->font_family_;
   font_size_pixels_ = other->font_size_pixels_;
   style_ = other->style_;
   height_pixels_ = other->height_pixels_;
   ascent_pixels_ = other->ascent_pixels_;
   cap_height_pixels_ = other->cap_height_pixels_;
@@ skipping 64 matching lines @@
   return new PlatformFontPango(native_font);
 }
 
 // static
 PlatformFont* PlatformFont::CreateFromNameAndSize(const std::string& font_name,
                                                   int font_size) {
   return new PlatformFontPango(font_name, font_size);
 }
 
 }  // namespace gfx