Extract an independent webkit_support_gfx target.

webkit/support/webkit_support.gypi

Index: webkit/support/webkit_support.gypi
diff --git a/webkit/support/webkit_support.gypi b/webkit/support/webkit_support.gypi
index 4ef4b25161f5b329f64ded76e6fce11182112f85..f807145d32e7a9549afc976507f6d8374f801def 100644
--- a/webkit/support/webkit_support.gypi
+++ b/webkit/support/webkit_support.gypi
@@ -83,6 +83,7 @@
         '<(DEPTH)/skia/skia.gyp:skia',
         '<(DEPTH)/ui/ui.gyp:ui',
         'glue',
+        'webkit_support_gfx',
       ],
       'export_dependent_settings': [
         '<(DEPTH)/base/base.gyp:base',
@@ -113,8 +114,6 @@
         '<(DEPTH)/webkit/tools/test_shell/test_shell_webmimeregistry_impl.h',
         'simple_database_system.cc',
         'simple_database_system.h',
-        'webkit_support_gfx.h',
-        'webkit_support_gfx.cc',
       ],
       'conditions': [
         ['inside_chromium_build==0', {
@@ -124,5 +123,25 @@
         }],
       ],
     },
+
+    {
+      'target_name': 'webkit_support_gfx',
+      'type': 'static_library',
+      'dependencies': [
+        '<(DEPTH)/third_party/libpng/libpng.gyp:libpng',
+      ],
+      'sources': [
+        'webkit_support_gfx.h',
+        'webkit_support_gfx.cc',
+      ],
+      'include_dirs': [
+        '<(DEPTH)',
+      ],
+      'conditions': [
+          ['OS=="android"', {
+              'toolsets': ['target', 'host'],
+          }],
+      ],
+    },
   ],
 }