Remove DwoC in CanAccessDataForOrigin.

Disabling on M-89 dues to recent spike.

Bug: 1148542
Change-Id: I83b62f75d8e8b034d58f44fe64ab5bae055abeb2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2576430Reviewed-by: Charlie Reis <creis@chromium.org>
Commit-Queue: Charlie Reis <creis@chromium.org>
Auto-Submit: James MacLean <wjmaclean@chromium.org>
Cr-Commit-Position: refs/heads/master@{#834459}

content/browser/child_process_security_policy_impl.cc

@@ -590,10 +590,6 @@ class ChildProcessSecurityPolicyImpl::SecurityState {
     return browsing_instance_ids_;
   }
 
-  unsigned max_browsing_instance_count() const {
-    return max_browsing_instance_count_;
-  }
-
   void ClearBrowsingInstanceId(const BrowsingInstanceId& id) {
     browsing_instance_ids_.erase(id);
   }
@@ -1640,21 +1636,6 @@ bool ChildProcessSecurityPolicyImpl::CanAccessDataForOrigin(
         // BrowsingInstances are registered in the process. Allow this for now,
         // to maintain legacy behavior, until we rule out all the ways it can
         // happen.
-        // Since |security_state| is non-null (see above), and if it's not in
-        // the list |security_state_|, then it must have been moved to
-        // |pending_remove_state_| which indicates the associated process is
-        // being shut down.
-        bool shutting_down =
-            security_state_.find(child_id) == security_state_.end();
-        failure_reason = base::StringPrintf(
-            "no BrowsingInstanceIds (max count %d) shutdown:%s",
-            security_state->max_browsing_instance_count(),
-            shutting_down ? "y" : "n");
-        LogCanAccessDataForOriginCrashKeys(
-            expected_process_lock.ToString(),
-            GetKilledProcessOriginLock(security_state), url.GetOrigin().spec(),
-            failure_reason);
-        base::debug::DumpWithoutCrashing();
         return true;
       }
       for (auto browsing_instance_id :