Mojo C++ bindings: make the generator use STL/WTF string/vector/map by default.

cc/ipc/BUILD.gn

Index: cc/ipc/BUILD.gn
diff --git a/cc/ipc/BUILD.gn b/cc/ipc/BUILD.gn
index 46895f17e7ed0fb02715b80d98e9e5d97441fc83..d52d3428ee10d0326b77c58b3a1565865cfe6cdf 100644
--- a/cc/ipc/BUILD.gn
+++ b/cc/ipc/BUILD.gn
@@ -60,6 +60,8 @@ mojom("interfaces") {
     "//ui/gfx/geometry/mojo",
     "//ui/gfx/mojo",
   ]
+
+  use_new_wrapper_types = false
 }
 
 mojom("interfaces_surfaceid_only") {
@@ -67,6 +69,8 @@ mojom("interfaces_surfaceid_only") {
     "surface_id.mojom",
     "surface_sequence.mojom",
   ]
+
+  use_new_wrapper_types = false
 }
 
 mojom("test_interfaces") {
@@ -79,4 +83,6 @@ mojom("test_interfaces") {
     ":interfaces",
     ":interfaces_surfaceid_only",
   ]
+
+  use_new_wrapper_types = false
 }