Set minimal width for the username in the password bubble on Mac.

chrome/browser/ui/cocoa/passwords/passwords_bubble_utils.h

 // Copyright 2015 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.
 
 #ifndef CHROME_BROWSER_UI_COCOA_PASSWORDS_PASSWORDS_BUBBLE_UTILS_H_
 #define CHROME_BROWSER_UI_COCOA_PASSWORDS_PASSWORDS_BUBBLE_UTILS_H_
 
 #include <string>
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/strings/string16.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/gfx/range/range.h"
 
 @class HyperlinkTextView;
 
 constexpr CGFloat kDesiredBubbleWidth = 370;
 constexpr CGFloat kFramePadding = 16;
 constexpr CGFloat kDesiredRowWidth = kDesiredBubbleWidth - 2 * kFramePadding;
 constexpr CGFloat kItemLabelSpacing = 10;
+constexpr CGFloat kMinUsernameSize = 50;
 constexpr CGFloat kRelatedControlHorizontalPadding = 2;
 constexpr CGFloat kRelatedControlVerticalSpacing = 8;
 constexpr CGFloat kTitleTextInset = 2;
 constexpr CGFloat kUnrelatedControlVerticalPadding = 15;
 constexpr CGFloat kVerticalAvatarMargin = 8;
 
 // Returns a font for password bubbles.
 NSFont* LabelFont();
 
 // Returns a size of a text that is defined by |resourceID| with a font
 // returned by LabelFont().
 NSSize LabelSize(int resourceID);
 
 // Initialize |textField| with |text| and default style parameters.
 void InitLabel(NSTextField* textField, const base::string16& text);
 
 // Returns widths of 2 columns, that are proportional to |columnsWidth| and
-// their total width is equal to |maxWidth|.
+// their total width is equal to |maxWidth|. The first column won't be shrunk to
+// less than |kMinUsernameSize|.
 std::pair<CGFloat, CGFloat> GetResizedColumns(
     CGFloat maxWidth,
     std::pair<CGFloat, CGFloat> columnsWidth);
 
 // Returns a password text field initialized with |text|.
 NSSecureTextField* PasswordLabel(const base::string16& text);
 
 // Returns a button of the standard style for the bubble.
 NSButton* DialogButton(NSString* title);
 
@@ skipping 14 matching lines @@
                                             id<NSTextViewDelegate> delegate);
 
 // Returns a label with |text| and small font. Nonempty |range| may specify a
 // link range.
 HyperlinkTextView* LabelWithLink(const base::string16& text,
                                  SkColor color,
                                  gfx::Range range,
                                  id<NSTextViewDelegate> delegate);
 
 #endif  // CHROME_BROWSER_UI_COCOA_PASSWORDS_PASSWORDS_BUBBLE_UTILS_H_