Temporarily allow warnings in libvpx

libvpx.gyp

Index: libvpx.gyp
===================================================================
--- libvpx.gyp	(revision 149334)
+++ libvpx.gyp	(working copy)
@@ -83,6 +83,11 @@
           # from asm files. This flag disables UseLibraryDependencyInputs to
           # avoid this problem.
           'msvs_2010_disable_uldi_when_referenced': 1,
+          'msvs_settings': {
+            'VCCLCompilerTool': {
+              'WarnAsError': 'false', # TODO(scottmg): Enable it.

[Nico, 2012/08/01 22:47:34]

I mean "# TODO(scottmg): Enable this for libvpx, http://crbug.com/YYY", where
YYY is the # of a to-be-filed tracking bug for enabling warnings-as-errors for
libvpx

+            },
+          },
           'conditions': [
             [ 'target_arch=="ia32"', {
               'includes': [