Supports gfx::FontList in gfx::Canvas and ui::ElideText family.

ui/gfx/canvas_ios.mm

Index: ui/gfx/canvas_ios.mm
diff --git a/ui/gfx/canvas_ios.mm b/ui/gfx/canvas_ios.mm
new file mode 100644
index 0000000000000000000000000000000000000000..a1f45d291e90c6857416e4f88c1660562feef38d
--- /dev/null
+++ b/ui/gfx/canvas_ios.mm
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+// Copyright (c) 2013 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/canvas.h"
+
+#import <UIKit/UIKit.h>
+
+#include <algorithm>
+#include <cmath>
+
+#include "base/logging.h"
+#include "base/strings/sys_string_conversions.h"
+#include "ui/gfx/font_list.h"
+
+namespace gfx {
+
+// static
+void Canvas::SizeStringInt(const base::string16& text,
+                           const gfx::FontList& font_list,
+                           int* width,
+                           int* height,
+                           int line_height,
+                           int flags) {
+  DLOG_IF(WARNING, line_height != 0) << "Line height not implemented.";
+  DLOG_IF(WARNING, flags & Canvas::MULTI_LINE) << "Multi-line not implemented.";
+
+  NSString* ns_text = base::SysUTF16ToNSString(text);
+  CGSize size = [ns_text
+      sizeWithFont:font_list.GetPrimaryFont().GetNativeFont()];
+  *width = std::ceil(size.width);
+  *height = std::max(static_cast<int>(std::ceil(size.height)),
+                     font_list.GetHeight());
+}
+
+}  // namespace gfx