Uses and returns the fractional width in text eliding

ash/system/user/tray_user.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 "ash/system/user/tray_user.h"
 
 #include <algorithm>
 #include <climits>
 #include <vector>
 
@@ skipping 522 matching lines @@
 }
 
 void PublicAccountUserDetails::CalculatePreferredSize(SystemTrayItem* owner,
                                                       int used_width) {
   const gfx::Font font;
   const gfx::Size link_size = learn_more_->GetPreferredSize();
   const int space_width = font.GetStringWidth(ASCIIToUTF16(" "));
   const gfx::Insets insets = GetInsets();
   views::TrayBubbleView* bubble_view =
       owner->system_tray()->GetSystemBubble()->bubble_view();
-  int min_width = std::max(
+  float min_width = std::max(
       link_size.width(),
       bubble_view->GetPreferredSize().width() - (used_width + insets.width()));
-  int max_width = std::min(
+  float max_width = std::min<float>(
       font.GetStringWidth(text_) + space_width + link_size.width(),
       bubble_view->GetMaximumSize().width() - (used_width + insets.width()));
   // Do a binary search for the minimum width that ensures no more than three
   // lines are needed. The lower bound is the minimum of the current bubble
   // width and the width of the link (as no wrapping is permitted inside the
   // link). The upper bound is the maximum of the largest allowed bubble width
   // and the sum of the label text and link widths when put on a single line.
   std::vector<base::string16> lines;
   while (min_width < max_width) {
     lines.clear();
-    const int width = (min_width + max_width) / 2;
+    const float width = (min_width + max_width) / 2;
     const bool too_narrow = gfx::ElideRectangleText(
-        text_, font, width, INT_MAX, gfx::TRUNCATE_LONG_WORDS, &lines) != 0;
+        text_, font, width, FLT_MAX, gfx::TRUNCATE_LONG_WORDS, &lines) != 0;
     int line_count = lines.size();
     if (!too_narrow && line_count == 3 &&
             width - font.GetStringWidth(lines.back()) <=
             space_width + link_size.width()) {
       ++line_count;
     }
     if (too_narrow || line_count > 3)
       min_width = width + 1;
     else
       max_width = width;
   }
 
   // Calculate the corresponding height and set the preferred size.
   lines.clear();
   gfx::ElideRectangleText(
-      text_, font, min_width, INT_MAX, gfx::TRUNCATE_LONG_WORDS, &lines);
+      text_, font, min_width, FLT_MAX, gfx::TRUNCATE_LONG_WORDS, &lines);
   int line_count = lines.size();
   if (min_width - font.GetStringWidth(lines.back()) <=
       space_width + link_size.width()) {
     ++line_count;
   }
   const int line_height = font.GetHeight();
   const int link_extra_height = std::max(
       link_size.height() - learn_more_->GetInsets().top() - line_height, 0);
   preferred_size_ = gfx::Size(
-      min_width + insets.width(),
+      std::ceil(min_width + insets.width()),
       line_count * line_height + link_extra_height + insets.height());
 
   bubble_view->SetWidth(preferred_size_.width() + used_width);
 }
 
 UserCard::UserCard(views::ButtonListener* listener, bool active_user)
     : CustomButton(listener),
       is_active_user_(active_user),
       button_hovered_(false),
       show_border_(false) {
@@ skipping 699 matching lines @@
       kUserIconLargeSize : kUserIconSize;
 
   avatar_->SetImage(
       ash::Shell::GetInstance()->session_state_delegate()->GetUserImage(
           multiprofile_index_),
       gfx::Size(icon_size, icon_size));
 }
 
 }  // namespace internal
 }  // namespace ash