Support FontRenderParams on Win; fix RenderTextHarfBuzz.

ui/gfx/render_text_win.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/render_text_win.h"
 
 #include <algorithm>
 
 #include "base/i18n/break_iterator.h"
 #include "base/i18n/char_iterator.h"
 #include "base/i18n/rtl.h"
 #include "base/logging.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/win/windows_version.h"
 #include "third_party/icu/source/common/unicode/uchar.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/font_fallback_win.h"
-#include "ui/gfx/font_smoothing_win.h"
+#include "ui/gfx/font_render_params.h"
 #include "ui/gfx/platform_font_win.h"
 #include "ui/gfx/utf16_indexing.h"
 
 namespace gfx {
 
 namespace {
 
 // The maximum length of text supported for Uniscribe layout and display.
 // This empirically chosen value should prevent major performance degradations.
 // TODO(msw): Support longer text, partial layout/painting, etc.
@@ skipping 772 matching lines @@
 void RenderTextWin::DrawVisualText(Canvas* canvas) {
   DCHECK(!needs_layout_);
   DCHECK(!lines().empty());
 
   std::vector<SkPoint> pos;
 
   internal::SkiaTextRenderer renderer(canvas);
   ApplyFadeEffects(&renderer);
   ApplyTextShadows(&renderer);
 
-  bool smoothing_enabled;
-  bool cleartype_enabled;
-  GetCachedFontSmoothingSettings(&smoothing_enabled, &cleartype_enabled);
-  // Note that |cleartype_enabled| corresponds to Skia's |enable_lcd_text|.
-  renderer.SetFontSmoothingSettings(
-      smoothing_enabled, cleartype_enabled && !background_is_transparent(),
-      smoothing_enabled /* subpixel_positioning */);
+  renderer.SetFontRenderParams(GetDefaultFontRenderParams(),
+                               background_is_transparent());
 
   ApplyCompositionAndSelectionStyles();
 
   for (size_t i = 0; i < lines().size(); ++i) {
     const internal::Line& line = lines()[i];
     const Vector2d line_offset = GetLineOffset(i);
 
     // Skip painting empty lines or lines outside the display rect area.
     if (!display_rect().Intersects(Rect(PointAtOffsetFromOrigin(line_offset),
                                         line.size)))
@@ skipping 451 matching lines @@
   size_t position = LayoutIndexToTextIndex(run->range.end());
   position = IndexOfAdjacentGrapheme(position, CURSOR_BACKWARD);
   return SelectionModel(position, CURSOR_FORWARD);
 }
 
 RenderText* RenderText::CreateNativeInstance() {
   return new RenderTextWin;
 }
 
 }  // namespace gfx