Mojo JS bindings: flip the default value of use_new_js_bindings to true.

mojo/public/interfaces/bindings/tests/BUILD.gn

Index: mojo/public/interfaces/bindings/tests/BUILD.gn
diff --git a/mojo/public/interfaces/bindings/tests/BUILD.gn b/mojo/public/interfaces/bindings/tests/BUILD.gn
index 9cd84d43fc89d4baf5edcd2e0af4c25c91939db0..17f1f1b22897d83761aa64499b19d495b1aab2eb 100644
--- a/mojo/public/interfaces/bindings/tests/BUILD.gn
+++ b/mojo/public/interfaces/bindings/tests/BUILD.gn
@@ -69,7 +69,6 @@ mojom("test_interfaces") {
     ":test_mojom_import",
     ":test_mojom_import2",
   ]
-  use_new_js_bindings = true
 
   # TODO(crbug.com/714018): Convert the implementation to use OnceCallback.
   use_once_callback = false
@@ -109,7 +108,6 @@ mojom("test_export") {
   if (!is_ios) {
     visibility_blink = [ ":test_export_blink_component" ]
   }
-  use_new_js_bindings = true
 }
 
 mojom("test_exported_import") {
@@ -127,7 +125,6 @@ mojom("test_exported_import") {
     overridden_deps_blink = [ ":test_export" ]
     component_deps_blink = [ ":test_export_blink_component" ]
   }
-  use_new_js_bindings = true
 }
 
 # Used to test that it is okay to call mojom::Foo::Serialize()/Deserialize()
@@ -153,7 +150,6 @@ mojom("test_export2") {
   export_define = "MOJO_TEST_IMPLEMENTATION=1"
   export_header = "mojo/public/cpp/bindings/tests/mojo_test_export.h"
   visibility = [ ":test_export_component2" ]
-  use_new_js_bindings = true
 }
 
 mojom("test_mojom_import") {
@@ -161,7 +157,6 @@ mojom("test_mojom_import") {
   sources = [
     "sample_import.mojom",
   ]
-  use_new_js_bindings = true
 }
 
 mojom("test_mojom_import_wrapper") {
@@ -187,7 +182,6 @@ mojom("test_mojom_import2") {
     ":test_mojom_import",
     ":test_mojom_import_wrapper_wrapper",
   ]
-  use_new_js_bindings = true
 }
 
 mojom("test_struct_traits_interfaces") {
@@ -196,8 +190,6 @@ mojom("test_struct_traits_interfaces") {
     "struct_with_traits.mojom",
   ]
 
-  use_new_js_bindings = true
-
   # TODO(crbug.com/714018): Convert the implementation to use OnceCallback.
   use_once_callback = false
 }
@@ -215,8 +207,6 @@ mojom("test_associated_interfaces") {
     ":test_interfaces",
   ]
 
-  use_new_js_bindings = true
-
   # TODO(crbug.com/714018): Convert the implementation to use OnceCallback.
   use_once_callback = false
 }
@@ -226,7 +216,6 @@ mojom("versioning_test_service_interfaces") {
   sources = [
     "versioning_test_service.mojom",
   ]
-  use_new_js_bindings = true
 }
 
 mojom("versioning_test_client_interfaces") {
@@ -234,7 +223,6 @@ mojom("versioning_test_client_interfaces") {
   sources = [
     "versioning_test_client.mojom",
   ]
-  use_new_js_bindings = true
 }
 
 mojom("test_wtf_types") {
@@ -244,8 +232,6 @@ mojom("test_wtf_types") {
     "test_wtf_types.mojom",
   ]
 
-  use_new_js_bindings = true
-
   # TODO(crbug.com/714018): Convert the implementation to use OnceCallback.
   use_once_callback = false
 }
@@ -264,5 +250,4 @@ mojom("echo") {
     "echo.mojom",
     "echo_import.mojom",
   ]
-  use_new_js_bindings = true
 }