When sizing to fit the extension install dialog title, expand the height instead of the width.

chrome/browser/ui/cocoa/extensions/extension_install_dialog_controller.mm

 // 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.
 
 #import "chrome/browser/ui/cocoa/extensions/extension_install_dialog_controller.h"
 
 #include "base/i18n/rtl.h"
 #include "base/mac/bundle_locations.h"
 #include "base/mac/mac_util.h"
 #include "base/memory/scoped_nsobject.h"
@@ skipping 159 matching lines @@
     [ratingCountField_ setStringValue:base::SysUTF16ToNSString(
         prompt_->GetRatingCount())];
     [userCountField_ setStringValue:base::SysUTF16ToNSString(
         prompt_->GetUserCount())];
   }
 
   // The bundle install dialog has no icon.
   if (![self isBundleInstall])
     [iconView_ setImage:prompt_->icon().ToNSImage()];
 
-  // Resize |titleField_| to fit the title.
-  CGFloat originalTitleWidth = [titleField_ frame].size.width;
-  [titleField_ sizeToFit];
-  CGFloat newTitleWidth = [titleField_ frame].size.width;
-  if (newTitleWidth > originalTitleWidth) {
-    NSRect frame = [[self window] frame];
-    frame.size.width += newTitleWidth - originalTitleWidth;
-    [[self window] setFrame:frame display:NO];
-  }
+  // The dialog is laid out in the NIB exactly how we want it assuming that
+  // each label fits on one line. However, for each label, we want to allow
+  // wrapping onto multiple lines. So we accumulate an offset by measuring how
+  // big each label wants to be, and comparing it to how big it actually is.
+  // Then we shift each label down and resize by the appropriate amount, then
+  // finally resize the window.
+  CGFloat totalOffset = 0.0;
+
+  OffsetControlVerticallyToFitContent(titleField_, &totalOffset);
 
   // Resize |okButton_| and |cancelButton_| to fit the button labels, but keep
   // them right-aligned.
   NSSize buttonDelta = [GTMUILocalizerAndLayoutTweaker sizeToFitView:okButton_];
   if (buttonDelta.width) {
     [okButton_ setFrame:NSOffsetRect([okButton_ frame], -buttonDelta.width, 0)];
     [cancelButton_ setFrame:NSOffsetRect([cancelButton_ frame],
                                          -buttonDelta.width, 0)];
   }
   buttonDelta = [GTMUILocalizerAndLayoutTweaker sizeToFitView:cancelButton_];
   if (buttonDelta.width) {
     [cancelButton_ setFrame:NSOffsetRect([cancelButton_ frame],
                                          -buttonDelta.width, 0)];
   }
 
-  // The dialog is laid out in the NIB exactly how we want it assuming that
-  // each label fits on one line. However, for each label, we want to allow
-  // wrapping onto multiple lines. So we accumulate an offset by measuring how
-  // big each label wants to be, and comparing it to how big it actually is.
-  // Then we shift each label down and resize by the appropriate amount, then
-  // finally resize the window.
-  CGFloat totalOffset = 0.0;
-
   if ([self isBundleInstall]) {
     [subtitleField_ setStringValue:base::SysUTF16ToNSString(
         prompt_->GetPermissionsHeading())];
 
     // We display the list of extension names as a simple text string, seperated
     // by newlines.
     BundleInstaller::ItemList items = prompt_->bundle()->GetItemsWithState(
         BundleInstaller::Item::STATE_PENDING);
 
     NSMutableString* joinedItems = [NSMutableString string];
     for (size_t i = 0; i < items.size(); ++i) {
       if (i > 0)
         [joinedItems appendString:@"\n"];
       [joinedItems appendString:base::SysUTF16ToNSString(
           items[i].GetNameForDisplay())];
     }
     [itemsField_ setStringValue:joinedItems];
 
     // Adjust the controls to fit the list of extensions.
-    OffsetControlVerticallyToFitContent(titleField_, &totalOffset);
     OffsetControlVerticallyToFitContent(itemsField_, &totalOffset);
   }
 
   // If there are any warnings, then we have to do some special layout.
   if (prompt_->GetPermissionCount() > 0) {
     [subtitleField_ setStringValue:base::SysUTF16ToNSString(
         prompt_->GetPermissionsHeading())];
 
     // We display the permission warnings as a simple text string, separated by
     // newlines.
@@ skipping 105 matching lines @@
   ExtensionInstallDialogController* controller =
       [[ExtensionInstallDialogController alloc]
         initWithParentWindow:native_window
                      profile:profile
                     delegate:delegate
                       prompt:prompt];
 
   // TODO(mihaip): Switch this to be tab-modal (http://crbug.com/95455)
   [controller runAsModalSheet];
 }