Fix SizeLabelToMinWidth() function such that no unnecessary space

chrome/test/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/common/features.gni")
@@ skipping 4788 matching lines @@
       sources += [
         "../browser/ui/views/accelerator_table_unittest.cc",
         "../browser/ui/views/accelerator_table_unittest_mac.mm",
         "../browser/ui/views/bookmarks/bookmark_bar_view_unittest.cc",
         "../browser/ui/views/bookmarks/bookmark_bubble_view_unittest.cc",
         "../browser/ui/views/bookmarks/bookmark_context_menu_unittest.cc",
         "../browser/ui/views/bookmarks/bookmark_editor_view_unittest.cc",
         "../browser/ui/views/bookmarks/bookmark_menu_delegate_unittest.cc",
         "../browser/ui/views/chooser_content_view_unittest.cc",
         "../browser/ui/views/confirm_bubble_views_unittest.cc",
+        "../browser/ui/views/download/download_item_view_unittest.cc",
         "../browser/ui/views/extensions/chooser_dialog_view_unittest.cc",
         "../browser/ui/views/extensions/media_galleries_dialog_views_unittest.cc",
         "../browser/ui/views/frame/browser_non_client_frame_view_unittest.cc",
         "../browser/ui/views/frame/browser_view_layout_unittest.cc",
         "../browser/ui/views/frame/browser_view_unittest.cc",
         "../browser/ui/views/frame/test_with_browser_view.cc",
         "../browser/ui/views/frame/test_with_browser_view.h",
         "../browser/ui/views/frame/web_contents_close_handler_unittest.cc",
         "../browser/ui/views/location_bar/icon_label_bubble_view_unittest.cc",
         "../browser/ui/views/omnibox/omnibox_view_views_unittest.cc",
@@ skipping 327 matching lines @@
 }
 
 if (is_win) {
   loadable_module("conflicts_dll") {
     testonly = true
     sources = [
       "conflicts/conflicts_dll.cc",
     ]
   }
 }