Update 3497 DEPS for M69 branching

Change-Id: Ib0f928021d95d7e7eb0654f7ae7de7d8986252c6
Reviewed-on: https://chromium-review.googlesource.com/1145591
Reviewed-by: Michael Moss <mmoss@chromium.org>
Cr-Commit-Position: refs/branch-heads/3497@{#4}
Cr-Branched-From: 271eaf5-refs/heads/master@{#576753}

DEPS

@@ -105,11 +105,11 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and whatever else without interference from each other.
-  'skia_revision': '0b0043392bfdf13f74ed64ba729f9c1e0fbae94f',
+  'skia_revision': 'refs/heads/chrome/m69',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.
-  'v8_revision': 'refs/heads/chromium/3497',
+  'v8_revision': 'refs/heads/6.9-lkgr',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling swarming_client
   # and whatever else without interference from each other.
@@ -1034,7 +1034,7 @@ deps = {
     Var('chromium_git') + '/external/khronosgroup/webgl.git' + '@' + 'a5c263cc63ffc2cc189b5214074c8792067c1853',
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + '881fe53d1faefe135c0d6959794da91a25e247f2',
+    Var('webrtc_git') + '/src.git' + '@' + 'refs/branch-heads/69',
 
   'src/third_party/xdg-utils': {
       'url': Var('chromium_git') + '/chromium/deps/xdg-utils.git' + '@' + 'd80274d5869b17b8c9067a1022e4416ee7ed5e0d',