diff --git a/src/net/BUILD.gn b/src/net/BUILD.gn
index 0bb1ad940c..d24ec5960c 100644
--- a/src/net/BUILD.gn
+++ b/src/net/BUILD.gn
@@ -1596,7 +1596,7 @@ component("net") {
     configs += [ "//build/config/compiler:optimize_max" ]
   }
 
-  if (!is_cronet_build) {
+  if (false) {
     deps += [ "//mojo/public/cpp/bindings:default_construct_tag" ]
   }
 }
diff --git a/src/net/cookies/cookie_partition_key.cc b/src/net/cookies/cookie_partition_key.cc
index 41e61319a5..465439b580 100644
--- a/src/net/cookies/cookie_partition_key.cc
+++ b/src/net/cookies/cookie_partition_key.cc
@@ -15,7 +15,7 @@
 #include "net/cookies/cookie_util.h"
 #include "net/cookies/site_for_cookies.h"
 
-#if !BUILDFLAG(CRONET_BUILD)
+#if 0
 #include "mojo/public/cpp/bindings/default_construct_tag.h"
 #endif
 
@@ -47,7 +47,7 @@ CookiePartitionKey::SerializedCookiePartitionKey::TopLevelSite() const {
   return top_level_site_;
 }
 
-#if !BUILDFLAG(CRONET_BUILD)
+#if 0
 CookiePartitionKey::CookiePartitionKey(mojo::DefaultConstruct::Tag) {}
 #endif
 bool CookiePartitionKey::SerializedCookiePartitionKey::has_cross_site_ancestor()
diff --git a/src/net/cookies/cookie_partition_key.h b/src/net/cookies/cookie_partition_key.h
index 7bf6840025..eca427080c 100644
--- a/src/net/cookies/cookie_partition_key.h
+++ b/src/net/cookies/cookie_partition_key.h
@@ -17,7 +17,7 @@
 #include "net/cookies/site_for_cookies.h"
 #include "url/gurl.h"
 
-#if !BUILDFLAG(CRONET_BUILD)
+#if 0
 #include "mojo/public/cpp/bindings/default_construct_tag.h"
 #endif
 
@@ -57,7 +57,7 @@ class NET_EXPORT CookiePartitionKey {
   static AncestorChainBit BoolToAncestorChainBit(bool val);
 
   CookiePartitionKey() = delete;
-#if !BUILDFLAG(CRONET_BUILD)
+#if 0
   explicit CookiePartitionKey(mojo::DefaultConstruct::Tag);
 #endif
   CookiePartitionKey(const CookiePartitionKey& other);