Roll GN from 6f13aaac..e002e68a

Generated by //tools/gn/roll_gn.py

https://gn.googlesource.com/gn/+log/6f13aaac..e002e68a

    e002e68a Add support for symbolset to bundle_data targets
    32c8eaf9 Add netbsd as a platform
    c0669368 Allow ".c++" as a C++ source file extension
    58d9b89d [format] Sort visibility like deps
    484245b9 clang: Fixes to module support
    b722d8ba Identify current toolchain on error

Bug: none
Change-Id: I588cb58da4ef228abf1f3e7c75cf557d6ba020d1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2401160
Auto-Submit: Sylvain Defresne <sdefresne@chromium.org>
Commit-Queue: Dirk Pranke <dpranke@google.com>
Reviewed-by: Dirk Pranke <dpranke@google.com>
Cr-Commit-Position: refs/heads/master@{#805479}

DEPS

@@ -368,7 +368,7 @@ vars = {
   # revisions.
 
   # GN CIPD package version.
-  'gn_version': 'git_revision:6f13aaac55a977e1948910942675c69f2b4f7a94',
+  'gn_version': 'git_revision:e002e68a48d1c82648eadde2f6aafa20d08c36f2',
 
   # Also, if you change these, update buildtools/DEPS too. Also update the
   # libc++ svn_revision in //buildtools/deps_revisions.gni.

buildtools/DEPS

@@ -14,7 +14,7 @@ vars = {
   #
 
   # GN CIPD package version.
-  'gn_version': 'git_revision:6f13aaac55a977e1948910942675c69f2b4f7a94',
+  'gn_version': 'git_revision:e002e68a48d1c82648eadde2f6aafa20d08c36f2',
 
   # When changing these, also update the svn revisions in deps_revisions.gni
   'clang_format_revision': '96636aa0e9f047f17447f2d45a094d0b59ed7917',