Cleanup remaining class/struct fwd declarations

tools/gn/target.h

 // Copyright (c) 2013 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 TOOLS_GN_TARGET_H_
 #define TOOLS_GN_TARGET_H_
 
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/gtest_prod_util.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "tools/gn/action_values.h"
 #include "tools/gn/bundle_data.h"
 #include "tools/gn/config_values.h"
 #include "tools/gn/inherited_libraries.h"
 #include "tools/gn/item.h"
 #include "tools/gn/label_pattern.h"
 #include "tools/gn/label_ptr.h"
 #include "tools/gn/lib_file.h"
 #include "tools/gn/ordered_set.h"
 #include "tools/gn/output_file.h"
 #include "tools/gn/source_file.h"
 #include "tools/gn/toolchain.h"
 #include "tools/gn/unique_vector.h"
 
 class DepsIteratorRange;
-class InputFile;
 class Settings;
-class Token;
 class Toolchain;
 
 class Target : public Item {
  public:
   enum OutputType {
     UNKNOWN,
     GROUP,
     EXECUTABLE,
     SHARED_LIBRARY,
     LOADABLE_MODULE,
@@ skipping 352 matching lines @@
   OutputFile link_output_file_;
   OutputFile dependency_output_file_;
   std::vector<OutputFile> runtime_outputs_;
 
   DISALLOW_COPY_AND_ASSIGN(Target);
 };
 
 extern const char kExecution_Help[];
 
 #endif  // TOOLS_GN_TARGET_H_