[wasm] Move test-signatures.h from test/cctest to test/common

test/fuzzer/fuzzer.gyp

 # Copyright 2016 the V8 project authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'variables': {
     'v8_code': 1,
   },
   'includes': ['../../gypfiles/toolchain.gypi', '../../gypfiles/features.gypi'],
   'targets': [
@@ skipping 148 matching lines @@
       'target_name': 'wasm_code_fuzzer_lib',
       'type': 'static_library',
       'dependencies': [
         'fuzzer_support',
       ],
       'include_dirs': [
         '../..',
       ],
       'sources': [  ### gcmole(all) ###
         'wasm-code.cc',
+        '../common/wasm/test-signatures.h',
         '../common/wasm/wasm-module-runner.cc',
         '../common/wasm/wasm-module-runner.h',
       ],
     },
     {
       'target_name': 'v8_simple_wasm_data_section_fuzzer',
       'type': 'executable',
       'dependencies': [
         'wasm_data_section_fuzzer_lib',
       ],
@@ skipping 259 matching lines @@
             '../../gypfiles/isolate.gypi',
           ],
           'sources': [
             'fuzzer.isolate',
           ],
         },
       ],
     }],
   ],
 }