Linux: create a library loader code generator for dlopen and use it for libpci.

content/content_gpu.gypi

 # Copyright (c) 2012 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.
 
 {
-  'variables': {
-    'linux_link_libpci%': 0,
-  },
   'dependencies': [
     '../base/base.gyp:base',
     '../skia/skia.gyp:skia',
     '../ui/gl/gl.gyp:gl',
   ],
   'sources': [
     'gpu/gpu_dx_diagnostics_win.cc',
     'gpu/gpu_info_collector_android.cc',
     'gpu/gpu_info_collector_linux.cc',
     'gpu/gpu_info_collector_mac.mm',
@@ skipping 74 matching lines @@
       ],
     }],
     ['OS=="win" and branding=="Chrome"', {
       'sources': [
         '../third_party/amd/AmdCfxPxExt.h',
         '../third_party/amd/amd_videocard_info_win.cc',
       ],
     }],
     ['OS=="linux"', {
       'dependencies': [
+        '../build/linux/system.gyp:libpci',
         '../third_party/libXNVCtrl/libXNVCtrl.gyp:libXNVCtrl',
       ],
     }],
     ['target_arch=="arm" and chromeos == 1', {
       'include_dirs': [
         '<(DEPTH)/third_party/openmax/il',
       ],
     }],
     ['target_arch!="arm" and chromeos == 1', {
       'include_dirs': [
         '<(DEPTH)/third_party/libva',
       ],
     }],
-    ['linux_link_libpci==0', {
-      'defines': [
-        'DLOPEN_LIBPCI',
-      ],
-    }, { # linux_link_libpci==1
-      'cflags': [
-        '<!@(pkg-config --cflags libpci)',
-      ],
-      'link_settings': {
-        'ldflags': [
-          '<!@(pkg-config --libs-only-L --libs-only-other libpci)',
-        ],
-        'libraries': [
-          '<!@(pkg-config --libs-only-l libpci)',
-        ],
-      }
-    }],
   ],
 }