Use the Mac omnibox field's font as the basis for the fonts used in the field and popup.

chrome/browser/autocomplete/autocomplete_edit_view_mac.mm

Index: chrome/browser/autocomplete/autocomplete_edit_view_mac.mm
diff --git a/chrome/browser/autocomplete/autocomplete_edit_view_mac.mm b/chrome/browser/autocomplete/autocomplete_edit_view_mac.mm
index d66c4cc66650c1b62ad564563ab614693df24cdb..dc1a6f5eac8c87bc9e7c6ccc497db3fea8665391 100644
--- a/chrome/browser/autocomplete/autocomplete_edit_view_mac.mm
+++ b/chrome/browser/autocomplete/autocomplete_edit_view_mac.mm
@@ -239,9 +239,14 @@ void AutocompleteEditViewMac::ClosePopup() {
 
 void AutocompleteEditViewMac::UpdateAndStyleText(
     const std::wstring& display_text, size_t user_text_length) {
+  NSDictionary* attributes = [NSDictionary dictionaryWithObjectsAndKeys:
+                                  [field_ font], NSFontAttributeName,
+                                  nil];
   NSString* ss = base::SysWideToNSString(display_text);
   NSMutableAttributedString* as =
-      [[[NSMutableAttributedString alloc] initWithString:ss] autorelease];
+      [[[NSMutableAttributedString alloc] initWithString:ss
+                                              attributes:attributes]
+        autorelease];
 
   url_parse::Parsed parts;
   AutocompleteInput::Parse(display_text, model_->GetDesiredTLD(),