Add tooltips to profile name when truncated

chrome/browser/ui/cocoa/profiles/avatar_menu_bubble_controller.mm

 // 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 "chrome/browser/ui/cocoa/profiles/avatar_menu_bubble_controller.h"
 
 #include "base/mac/bundle_locations.h"
 #include "base/strings/sys_string_conversions.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/profiles/avatar_menu.h"
@@ skipping 141 matching lines @@
   // Adjust the name field to fit the string. If it overflows, record by how
   // much the window needs to grow to accomodate the new size of the field.
   NSTextField* nameField = itemView.nameField;
   nameField.stringValue = base::SysUTF16ToNSString(item.name);
   NSSize delta = [GTMUILocalizerAndLayoutTweaker sizeToFitView:nameField];
   if (NSWidth([nameField frame]) > kMaxItemTextWidth) {
     delta.width -= (NSWidth([nameField frame]) - kMaxItemTextWidth);
     NSRect frame = [nameField frame];
     frame.size.width = kMaxItemTextWidth;
     [nameField setFrame:frame];
+    if ([nameField respondsToSelector:@selector(setAllowsExpansionToolTips:)]) {
+      [nameField setAllowsExpansionToolTips:YES];
+    }
   }
   *widthAdjust = std::max(*widthAdjust, delta.width);
 
   // Repeat for the sync state/email.
   NSTextField* emailField = itemView.emailField;
   emailField.stringValue = base::SysUTF16ToNSString(item.sync_state);
   delta = [GTMUILocalizerAndLayoutTweaker sizeToFitView:emailField];
   if (NSWidth([emailField frame]) > kMaxItemTextWidth) {
     delta.width -= (NSWidth([emailField frame]) - kMaxItemTextWidth);
     NSRect frame = [emailField frame];
@@ skipping 538 matching lines @@
 - (BOOL)accessibilityIsIgnored {
   return YES;
 }
 @end
 
 @implementation AccessibilityIgnoredTextFieldCell
 - (BOOL)accessibilityIsIgnored {
   return YES;
 }
 @end