Fix //third_party/cec to not disable -Wunused-function.

components/leveldb_proto/proto_database_impl.h

 // 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.
 
 #ifndef COMPONENTS_LEVELDB_PROTO_PROTO_DATABASE_IMPL_H_
 #define COMPONENTS_LEVELDB_PROTO_PROTO_DATABASE_IMPL_H_
 
 #include <memory>
 #include <string>
 #include <utility>
@@ skipping 163 matching lines @@
     T entry;
     if (!entry.ParseFromString(serialized_entry)) {
       DLOG(WARNING) << "Unable to parse leveldb_proto entry";
       // TODO(cjhopman): Decide what to do about un-parseable entries.
     }
 
     entries->push_back(entry);
   }
 }
 
-void LoadKeysFromTaskRunner(LevelDB* database,
-                            std::vector<std::string>* keys,
-                            bool* success) {
+inline void LoadKeysFromTaskRunner(LevelDB* database,
+                                   std::vector<std::string>* keys,
+                                   bool* success) {
   DCHECK(success);
   DCHECK(keys);
   keys->clear();
   *success = database->LoadKeys(keys);
 }
 
 template <typename T>
 void GetEntryFromTaskRunner(LevelDB* database,
                             const std::string& key,
                             T* entry,
@@ skipping 138 matching lines @@
       FROM_HERE,
       base::Bind(GetEntryFromTaskRunner<T>, base::Unretained(db_.get()), key,
                  entry_ptr, found, success),
       base::Bind(RunGetCallback<T>, callback, base::Owned(success),
                  base::Owned(found), base::Passed(&entry)));
 }
 
 }  // namespace leveldb_proto
 
 #endif  // COMPONENTS_LEVELDB_PROTO_PROTO_DATABASE_IMPL_H_