[115 merge] Add chrome/src-internal under src

This combines changs from main:
* https://crrev.com/c/4564593
* https://crrev.com/c/4324321

Reason for merge request: without //src/internal present in release
branches, we would need to support both paths until no release branch
uses old //src-internal path. Supporting both in recipes and recipe
configs is complex and would require many changes across many repos.

Bug: 1451907
Change-Id: Ifb86b828acaebeef0113002402b4959b99d1f653
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4596161
Commit-Queue: Josip Sokcevic <sokcevic@chromium.org>
Reviewed-by: Garrett Beaty <gbeaty@google.com>
Cr-Commit-Position: refs/branch-heads/5790@{#550}
Cr-Branched-From: 1d71a33-refs/heads/main@{#1148114}

DEPS

@@ -298,6 +298,10 @@ vars = {
   'webrtc_git': 'https://webrtc.googlesource.com',
   'betocore_git': 'https://beto-core.googlesource.com',
   # Three lines of non-changing comments so that
+  # the commit queue can handle CLs rolling V8
+  # and whatever else without interference from each other.
+  'src_internal_revision': 'refs/heads/chromium/5790',
+  # 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': 'refs/heads/chrome/m115',
@@ -1980,7 +1984,11 @@ deps = {
     Var('chromium_git') + '/v8/v8.git' + '@' +  Var('v8_revision'),
 
   'src-internal': {
-    'url': Var('chrome_git') + '/chrome/src-internal.git@refs/heads/chromium/5790',
+    'url': Var('chrome_git') + '/chrome/src-internal.git' + '@' + Var('src_internal_revision'),
+    'condition': 'checkout_src_internal',
+  },
+  'src/internal': {
+    'url': Var('chrome_git') + '/chrome/src-internal.git' + '@' + Var('src_internal_revision'),
     'condition': 'checkout_src_internal',
   },