Workaround for bad driver issue with NVIDIA GeForce 7300 GT on Mac 10.5.

BUG=87283
TEST=Run on a machine with NVIDIA GeForce 7300 GT on Mac 10.5 immediately after booting.

Review URL: http://codereview.chromium.org/7373018

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@92651 0039d316-1c4b-4281-b951-d872f2087c98
void scoped_pixel_buffer_object::Release() {
  if (pixel_buffer_object_) {
    CGLContextObj CGL_MACRO_CONTEXT = cgl_context_;
    glDeleteBuffersARB(1, &pixel_buffer_object_);
    cgl_context_ = NULL;
    pixel_buffer_object_ = 0;
  }
}

void scoped_pixel_buffer_object::Release() {
  if (pixel_buffer_object_) {
    CGLContextObj CGL_MACRO_CONTEXT = cgl_context_;
    glDeleteBuffersARB(1, &pixel_buffer_object_);
    cgl_context_ = NULL;
    pixel_buffer_object_ = 0;
  }
}
