Add a few missing "self = [super init..." notices by the clang static analyzer.

chrome/browser/ui/cocoa/external_protocol_dialog.mm

 // Copyright (c) 2011 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/external_protocol_dialog.h"
 
 #include "base/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "base/string_util.h"
 #include "base/sys_string_conversions.h"
@@ skipping 20 matching lines @@
 - (void)alertEnded:(NSAlert *)alert
         returnCode:(int)returnCode
        contextInfo:(void*)contextInfo;
 - (string16)appNameForProtocol;
 @end
 
 @implementation ExternalProtocolDialogController
 - (id)initWithGURL:(const GURL*)url {
   DCHECK_EQ(MessageLoop::TYPE_UI, MessageLoop::current()->type());
 
+  if (!(self = [super init]))
+    return nil;
+
   url_ = *url;
   creation_time_ = base::Time::Now();
 
   string16 appName = [self appNameForProtocol];
   if (appName.length() == 0) {
     // No registered apps for this protocol; give up and go home.
     [self autorelease];
     return nil;
   }
 
@@ skipping 93 matching lines @@
   }
   NSString* appPath = [(NSURL*)openingApp path];
   CFRelease(openingApp);  // NOT A BUG; LSGetApplicationForURL retains for us
   NSString* appDisplayName =
       [[NSFileManager defaultManager] displayNameAtPath:appPath];
 
   return base::SysNSStringToUTF16(appDisplayName);
 }
 
 @end