Remove DCHECK_IMPLIES and CHECK_IMPLIES

gpu/command_buffer/service/mailbox_manager_sync.cc

 // Copyright 2014 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 "gpu/command_buffer/service/mailbox_manager_sync.h"
 
 #include <algorithm>
 #include <queue>
 
 #include "base/memory/linked_ptr.h"
@@ skipping 266 matching lines @@
 
   // Make sure we don't clobber with an older version
   if (!definition.IsOlderThan(group_ref->version))
     return;
 
   // Also don't push redundant updates. Note that it would break the
   // versioning.
   if (definition.Matches(texture))
     return;
 
-  DCHECK_IMPLIES(gl_image, image_buffer.get());
+  DCHECK(!gl_image || image_buffer.get());
   if (gl_image && !image_buffer->IsClient(gl_image)) {
     LOG(ERROR) << "MailboxSync: Incompatible attachment";
     return;
   }
 
   group->SetDefinition(TextureDefinition(texture, ++group_ref->version,
                                          gl_image ? image_buffer : NULL));
 }
 
 void MailboxManagerSync::PushTextureUpdates(uint32 sync_point) {
@@ skipping 29 matching lines @@
   if (!needs_update.empty()) {
     ScopedUpdateTexture scoped_update_texture;
     for (const TextureUpdatePair& pair : needs_update) {
       pair.second.UpdateTexture(pair.first);
     }
   }
 }
 
 }  // namespace gles2
 }  // namespace gpu