Mojo C++ Bindings: fix mojom::Foo::Deserialize() for component build.

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

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("../../../tools/bindings/mojom.gni")
 
 mojom("test_interfaces") {
   testonly = true
   sources = [
     "math_calculator.mojom",
@@ skipping 66 matching lines @@
   ]
 
   overridden_deps = [ ":test_export" ]
   component_deps = [ ":test_export_component" ]
   if (!is_ios) {
     overridden_deps_blink = [ ":test_export" ]
     component_deps_blink = [ ":test_export_blink_component" ]
   }
 }
 
+# Used to test that it is okay to call mojom::Foo::Serialize()/Deserialize()
+# even if the mojom target is linked into another component.
+#
+# We don't use |test_export_component| for this test because
+# //mojo/public/cpp/bindings/tests depends on both |test_export_component| and
+# |test_exported_import| and therefore actually get the shared cpp sources of
+# test_export.mojom from |test_exported_import|.
+component("test_export_component2") {
+  testonly = true
+  public_deps = [
+    ":test_export2",
+  ]
+}
+
+mojom("test_export2") {
+  testonly = true
+  sources = [
+    "test_export2.mojom",
+  ]
+  export_class_attribute = "MOJO_TEST_EXPORT"
+  export_define = "MOJO_TEST_IMPLEMENTATION=1"
+  export_header = "mojo/public/cpp/bindings/tests/mojo_test_export.h"
+  visibility = [ ":test_export_component2" ]
+}
+
 mojom("test_mojom_import") {
   testonly = true
   sources = [
     "sample_import.mojom",
   ]
 }
 
 mojom("test_mojom_import_wrapper") {
   testonly = true
   public_deps = [
@@ skipping 69 matching lines @@
   ]
 }
 
 mojom("test_no_sources") {
   testonly = true
 
   public_deps = [
     ":test_interfaces",
   ]
 }