Import .gyp files into the Chromium tree

third_party/libpng/libpng.gyp

+# Copyright (c) 2009 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.
+
+{
+  'includes': [
+    '../../build/common.gypi',
+  ],
+  'targets': [
+    {
+      'target_name': 'libpng',
+      'type': 'static_library',
+      'dependencies': [
+        '../zlib/zlib.gyp:zlib',
+      ],
+      'defines': [
+        'CHROME_PNG_WRITE_SUPPORT',
+        'PNG_USER_CONFIG',
+      ],
+      'sources': [
+        'png.c',
+        'png.h',
+        'pngconf.h',
+        'pngerror.c',
+        'pnggccrd.c',
+        'pngget.c',
+        'pngmem.c',
+        'pngpread.c',
+        'pngread.c',
+        'pngrio.c',
+        'pngrtran.c',
+        'pngrutil.c',
+        'pngset.c',
+        'pngtrans.c',
+        'pngusr.h',
+        'pngvcrd.c',
+        'pngwio.c',
+        'pngwrite.c',
+        'pngwtran.c',
+        'pngwutil.c',
+      ],
+      'direct_dependent_settings': {
+        'include_dirs': [
+          '.',
+        ],
+        'defines': [
+          'CHROME_PNG_WRITE_SUPPORT',
+          'PNG_USER_CONFIG',
+        ],
+      },
+      'export_dependent_settings': [
+        '../zlib/zlib.gyp:zlib',
+      ],
+      'conditions': [
+        ['OS!="win"', {'product_name': 'png'}],
+      ],
+    },
+  ],
+}