DevTools: do not use platform/ to load injected scripts into inspector/v8.

third_party/WebKit/Source/build/ConvertFileToHeaderWithCharacterArray.gypi

+# Copyright 2016 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.
+#
+# To use this, create a gyp target with the following form:
+# {
+#   'target_name': 'GenerateInjectedScriptSource',
+#   'type': 'none',
+#   'variables': {
+#     'input_file_path': 'inspector/v8/InjectedScriptSource.js'',
+#     'output_file_path': '<(SHARED_INTERMEDIATE_DIR)/blink/InjectedScriptSource.h',
+#     'character_array_name': 'InjectedScriptSource_js',
+#   },
+#   'includes': [ 'ConvertFileToHeaderWithCharacterArray.gypi' ],
+# },
+{
+  'actions': [
+    {
+      'action_name': 'ConvertFileToHeaderWithCharacterArray',
+      'inputs': [
+        '../build/scripts/xxd.py',
+        '<(input_file_path)',
+      ],
+      'outputs': [ '<@(output_file_path)', ],
+      'action': [
+        'python',
+        '../build/scripts/xxd.py',
+        '<(character_array_name)',
+        '<(input_file_path)',
+        '<@(_outputs)'
+      ],
+      'message': 'Generating <(output_file_path) from <(input_file_path)',
+    },
+  ],
+  # Since this target generates header files, it needs to be a hard dependency.
+  'hard_dependency': 1,
+}