Revert "Make GCC happy again." and "Initial switch to Chromium-style CHECK_* and DCHECK_* macros.".

src/base/platform/condition-variable.cc

 // Copyright 2013 the V8 project 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 "src/base/platform/condition-variable.h"
 
 #include <errno.h>
 #include <time.h>
 
 #include "src/base/platform/time.h"
@@ skipping 164 matching lines @@
 
   return event;
 }
 
 
 void ConditionVariable::NativeHandle::Post(Event* event, bool result) {
   LockGuard<Mutex> lock_guard(&mutex_);
 
   // Remove the event from the wait list.
   for (Event** wep = &waitlist_;; wep = &(*wep)->next_) {
-    DCHECK(*wep);
+    DCHECK_NE(NULL, *wep);
     if (*wep == event) {
       *wep = event->next_;
       break;
     }
   }
 
 #ifdef DEBUG
   // The event must not be on the free list.
   for (Event* fe = freelist_; fe != NULL; fe = fe->next_) {
     DCHECK_NE(event, fe);
@@ skipping 117 matching lines @@
   // Release the wait event.
   DCHECK(!result || event->notified_);
   native_handle_.Post(event, result);
 
   return result;
 }
 
 #endif  // V8_OS_POSIX
 
 } }  // namespace v8::base