Reduce the amount of included header files. Vast change like in "Oh God! This...

net/disk_cache/storage_block-inl.h

Index: net/disk_cache/storage_block-inl.h
===================================================================
--- net/disk_cache/storage_block-inl.h	(revision 9942)
+++ net/disk_cache/storage_block-inl.h	(working copy)
@@ -2,11 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef NET_DISK_CACHE_CACHE_INTERNAL_INL_H__
-#define NET_DISK_CACHE_CACHE_INTERNAL_INL_H__
+#ifndef NET_DISK_CACHE_CACHE_INTERNAL_INL_H_
+#define NET_DISK_CACHE_CACHE_INTERNAL_INL_H_
 
 #include "net/disk_cache/storage_block.h"
 
+#include "base/logging.h"
 #include "net/disk_cache/trace.h"
 
 namespace disk_cache {
@@ -132,5 +133,4 @@
 
 }  // namespace disk_cache
 
-#endif  // NET_DISK_CACHE_CACHE_INTERNAL_INL_H__
-
+#endif  // NET_DISK_CACHE_CACHE_INTERNAL_INL_H_