Update DEPS for 3955 branching

# This is an automated release commit.
# Do not revert without consulting chrome-pmo@google.com.
NOAUTOREVERT=true
TBR=benmason@chromium.org

Change-Id: I9106d5a18ee82868a1e281914d8b123e52c3af62
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1892452
Reviewed-by: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/branch-heads/3955@{#1}
Cr-Branched-From: 1be17a9-refs/heads/master@{#710886}

DEPS

@@ -176,23 +176,23 @@ vars = {
   # 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': 'f752e3770e63f8c443f39d2eb58c0bc28fe8c89f',
+  'v8_revision': 'refs/heads/chromium/3955',
   # 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.
   'swarming_revision': '885b3febcc170a60f25795304e60927b77d1e92d',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling ANGLE
   # and whatever else without interference from each other.
-  'angle_revision': '924dad3b22c29f0e76478d6a3ca97a634f0f5487',
+  'angle_revision': 'refs/heads/chromium/3955',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling SwiftShader
   # and whatever else without interference from each other.
   'swiftshader_revision': 'fda994c630754d62f280a1db59317efefb55418e',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling PDFium
   # and whatever else without interference from each other.
-  'pdfium_revision': '54eda5713da0908738c79021da5314b91fb773ae',
+  'pdfium_revision': 'refs/heads/chromium/3955',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling BoringSSL
   # and whatever else without interference from each other.
@@ -1574,7 +1574,7 @@ deps = {
     Var('chromium_git') + '/v8/v8.git' + '@' +  Var('v8_revision'),
 
   'src-internal': {
-    'url': 'https://chrome-internal.googlesource.com/chrome/src-internal.git@6d56bdc1447af2620794877eebda186d9bc13ffd',
+    'url': 'https://chrome-internal.googlesource.com/chrome/src-internal.git@refs/heads/chromium/3955',
     'condition': 'checkout_src_internal',
   },