Cleanup: Fix content header include guards.

content/renderer/gpu/queue_message_swap_promise.h

Index: content/renderer/gpu/queue_message_swap_promise.h
diff --git a/content/renderer/gpu/queue_message_swap_promise.h b/content/renderer/gpu/queue_message_swap_promise.h
index 245323e320f4b478ad1bf084cbc90d1acc0e06e5..0c92a930259004ad568041baac79fe3850ca3592 100644
--- a/content/renderer/gpu/queue_message_swap_promise.h
+++ b/content/renderer/gpu/queue_message_swap_promise.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CONTENT_RENDERER_QUEUE_MESSAGE_SWAP_PROMISE_H_
-#define CONTENT_RENDERER_QUEUE_MESSAGE_SWAP_PROMISE_H_
+#ifndef CONTENT_RENDERER_GPU_QUEUE_MESSAGE_SWAP_PROMISE_H_
+#define CONTENT_RENDERER_GPU_QUEUE_MESSAGE_SWAP_PROMISE_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ -44,4 +44,4 @@ class QueueMessageSwapPromise : public cc::SwapPromise {
 
 }  // namespace content
 
-#endif  // CONTENT_RENDERER_QUEUE_MESSAGE_SWAP_PROMISE_H_
+#endif  // CONTENT_RENDERER_GPU_QUEUE_MESSAGE_SWAP_PROMISE_H_