Fix appearance of header row separators in table view at fractional

ui/views/controls/table/table_header.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/views/controls/table/table_header.h"
 
 #include <stddef.h>
 
 #include "cc/paint/paint_flags.h"
 #include "third_party/skia/include/core/SkColor.h"
@@ skipping 49 matching lines @@
   ui::NativeTheme* theme = GetNativeTheme();
   const SkColor text_color =
       theme->GetSystemColor(ui::NativeTheme::kColorId_TableHeaderText);
   const SkColor separator_color =
       theme->GetSystemColor(ui::NativeTheme::kColorId_TableHeaderSeparator);
   // Paint the background and a separator at the bottom. The separator color
   // matches that of the border around the scrollview.
   OnPaintBackground(canvas);
   SkColor border_color =
       theme->GetSystemColor(ui::NativeTheme::kColorId_UnfocusedBorderColor);
-  canvas->DrawLine(gfx::Point(0, height() - 1),
-                   gfx::Point(width(), height() - 1), border_color);
+  canvas->DrawSharpLine(gfx::PointF(0, height() - 1),
+                        gfx::PointF(width(), height() - 1), border_color);
 
   const Columns& columns = table_->visible_columns();
   const int sorted_column_id = table_->sort_descriptors().empty() ? -1 :
       table_->sort_descriptors()[0].column_id;
   for (size_t i = 0; i < columns.size(); ++i) {
     if (columns[i].width >= 2) {
       const int separator_x = GetMirroredXInView(
           columns[i].x + columns[i].width - 1);
-      canvas->DrawLine(gfx::Point(separator_x, kSeparatorPadding),
-                       gfx::Point(separator_x, height() - kSeparatorPadding),
-                       separator_color);
+      canvas->DrawSharpLine(
+          gfx::PointF(separator_x, kSeparatorPadding),
+          gfx::PointF(separator_x, height() - kSeparatorPadding),
+          separator_color);
     }
 
     const int x = columns[i].x + kHorizontalPadding;
     int width = columns[i].width - kHorizontalPadding - kHorizontalPadding;
     if (width <= 0)
       continue;
 
     const int title_width =
         gfx::GetStringWidth(columns[i].column.title, font_list_);
     const bool paint_sort_indicator =
@@ skipping 187 matching lines @@
   if (index > 0 && x >= column.x - kResizePadding &&
       x <= column.x + kResizePadding) {
     return index - 1;
   }
   const int max_x = column.x + column.width;
   return (x >= max_x - kResizePadding && x <= max_x + kResizePadding) ?
       index : -1;
 }
 
 }  // namespace views