Split bindings/v8/custom into core and modules.

Source/bindings/v8/v8.gypi

Index: Source/bindings/v8/v8.gypi
diff --git a/Source/bindings/v8/v8.gypi b/Source/bindings/v8/v8.gypi
index a220a63087ee373c20f589a25371baa30c94588a..5795b5a1e7105d97259204335780de32ccfaff11 100644
--- a/Source/bindings/v8/v8.gypi
+++ b/Source/bindings/v8/v8.gypi
@@ -5,11 +5,13 @@
 {
     'includes': [
         'custom/custom.gypi',
+        '../modules/v8/custom/custom.gypi',

[Nils Barth (inactive), 2014/06/17 06:43:57]

BTW, eventually we need to eliminate this file
(once this directory is empty).

However, it's fine to keep it short-term so we don't have
direct references from core to bindings_modules,
so this addition is ok.

[tasak, 2014/06/24 02:43:41]

Yeah, we should remove the file.

However, currently I found that we need the file because Source/core/core.gyp
uses "bindings_modules_v8_output_dir".

So now the file is '../modules/v8/generated.gypi'.

[Nils Barth (inactive), 2014/06/24 03:14:02]

Exactly!

     ],
     'variables': {
         'bindings_v8_dir': '.',
         'bindings_v8_files': [
             '<@(bindings_v8_custom_files)',
+            '<@(bindings_v8_modules_custom_files)',
             'ActiveDOMCallback.cpp',
             'ActiveDOMCallback.h',
             'ArrayValue.cpp',