Convert plain C-style casts to use CFCastStrict and GetValueFromDictionary template

net/proxy/proxy_resolver_mac.cc

 // 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.
 
 #include "net/proxy/proxy_resolver_mac.h"
 
 #include <CoreFoundation/CoreFoundation.h>
 #include <CoreServices/CoreServices.h>
 
 #include "base/logging.h"
@@ skipping 112 matching lines @@
   CFRunLoopRunInMode(private_runloop_mode, DBL_MAX, false);
   CFRunLoopRemoveSource(CFRunLoopGetCurrent(), runloop_source.get(),
                         private_runloop_mode);
   DCHECK(result != NULL);
 
   if (CFGetTypeID(result) == CFErrorGetTypeID()) {
     // TODO(avi): do something better than this
     CFRelease(result);
     return ERR_FAILED;
   }
-  DCHECK(CFGetTypeID(result) == CFArrayGetTypeID());
-  base::mac::ScopedCFTypeRef<CFArrayRef> proxy_array_ref((CFArrayRef)result);
+  base::mac::ScopedCFTypeRef<CFArrayRef> proxy_array_ref(
+      base::mac::CFCastStrict<CFArrayRef>(result));
+  DCHECK(proxy_array_ref != NULL);
 
   // This string will be an ordered list of <proxy-uri> entries, separated by
   // semi-colons. It is the format that ProxyInfo::UseNamedProxy() expects.
   //    proxy-uri = [<proxy-scheme>"://"]<proxy-host>":"<proxy-port>
   // (This also includes entries for direct connection, as "direct://").
   std::string proxy_uri_list;
 
   CFIndex proxy_array_count = CFArrayGetCount(proxy_array_ref.get());
   for (CFIndex i = 0; i < proxy_array_count; ++i) {
-    CFDictionaryRef proxy_dictionary =
-        (CFDictionaryRef)CFArrayGetValueAtIndex(proxy_array_ref.get(), i);
-    DCHECK(CFGetTypeID(proxy_dictionary) == CFDictionaryGetTypeID());
+    CFDictionaryRef proxy_dictionary = base::mac::CFCastStrict<CFDictionaryRef>(
+        CFArrayGetValueAtIndex(proxy_array_ref.get(), i));
+    DCHECK(proxy_dictionary != NULL);
 
     // The dictionary may have the following keys:
     // - kCFProxyTypeKey : The type of the proxy
     // - kCFProxyHostNameKey
     // - kCFProxyPortNumberKey : The meat we're after.
     // - kCFProxyUsernameKey
     // - kCFProxyPasswordKey : Despite the existence of these keys in the
     //                         documentation, they're never populated. Even if a
     //                         username/password were to be set in the network
     //                         proxy system preferences, we'd need to fetch it
     //                         from the Keychain ourselves. CFProxy is such a
     //                         tease.
     // - kCFProxyAutoConfigurationURLKey : If the PAC file specifies another
     //                                     PAC file, I'm going home.
 
-    CFStringRef proxy_type =
-        (CFStringRef)base::mac::GetValueFromDictionary(proxy_dictionary,
-                                                      kCFProxyTypeKey,
-                                                      CFStringGetTypeID());
+    CFStringRef proxy_type = base::mac::GetValueFromDictionary<CFStringRef>(
+        proxy_dictionary, kCFProxyTypeKey);
     ProxyServer proxy_server = ProxyServer::FromDictionary(
         GetProxyServerScheme(proxy_type),
         proxy_dictionary,
         kCFProxyHostNameKey,
         kCFProxyPortNumberKey);
     if (!proxy_server.is_valid())
       continue;
 
     if (!proxy_uri_list.empty())
       proxy_uri_list += ";";
@@ skipping 26 matching lines @@
 }
 
 int ProxyResolverMac::SetPacScript(
     const scoped_refptr<ProxyResolverScriptData>& script_data,
     OldCompletionCallback* /*callback*/) {
   script_data_ = script_data;
   return OK;
 }
 
 }  // namespace net