We have localization (w00t!). Using it.

chrome/browser/cocoa/sad_tab_view.mm

 // Copyright (c) 2009 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.
 
 #include "chrome/browser/cocoa/sad_tab_view.h"
 
+#include "base/sys_string_conversions.h"
+#include "chrome/common/l10n_util.h"
+#include "grit/generated_resources.h"
+
 static const int kSadTabOffset = -64;
 static const int kIconTitleSpacing = 20;
 static const int kTitleMessageSpacing = 15;
 
 @implementation SadTabView
 
 - (void)drawRect:(NSRect)dirtyRect {
   NSImage* sadTabImage = [NSImage imageNamed:@"sadtab"];
-  NSString* title = @"Aw, Snap!";  // TODO(avi):localize
-  NSString* message = @"Something went wrong while displaying this webpage. "
-      "To continue, press Reload or go to another page.";
+  NSString* title =
+      base::SysWideToNSString(l10n_util::GetString(IDS_SAD_TAB_TITLE));
+  NSString* message =
+      base::SysWideToNSString(l10n_util::GetString(IDS_SAD_TAB_MESSAGE));
   
   NSColor* textColor = [NSColor whiteColor];
   NSColor* backgroundColor = [NSColor colorWithCalibratedRed:(35.0f/255.0f)
                                                        green:(48.0f/255.0f)
                                                         blue:(64.0f/255.0f)
                                                        alpha:1.0];
   
   // Layout
   NSFont* titleFont = [NSFont boldSystemFontOfSize:[NSFont systemFontSize]];
   NSFont* messageFont = [NSFont systemFontOfSize:[NSFont smallSystemFontSize]];
@@ skipping 37 matching lines @@
   
   [sadTabImage drawAtPoint:NSMakePoint(iconX, iconY)
                   fromRect:NSZeroRect
                  operation:NSCompositeSourceOver
                   fraction:1.0f];
   [titleString drawAtPoint:NSMakePoint(titleX, titleY)];
   [messageString drawAtPoint:NSMakePoint(messageX, messageY)];
 }
 
 @end