Mojo cpp bindings: remove redundant validation in Decode*().

mojo/public/cpp/bindings/lib/array_internal.cc

Index: mojo/public/cpp/bindings/lib/array_internal.cc
diff --git a/mojo/public/cpp/bindings/lib/array_internal.cc b/mojo/public/cpp/bindings/lib/array_internal.cc
index 4614bd15c1844135526d4b2e91050164ebef2601..18443edcb960c79b7f61a6d440e0189f77b5c3ce 100644
--- a/mojo/public/cpp/bindings/lib/array_internal.cc
+++ b/mojo/public/cpp/bindings/lib/array_internal.cc
@@ -44,15 +44,12 @@ void ArraySerializationHelper<Handle, true>::EncodePointersAndHandles(
 }
 
 // static
-bool ArraySerializationHelper<Handle, true>::DecodePointersAndHandles(
+void ArraySerializationHelper<Handle, true>::DecodePointersAndHandles(
     const ArrayHeader* header,
     ElementType* elements,
-    Message* message) {
-  for (uint32_t i = 0; i < header->num_elements; ++i) {
-    if (!DecodeHandle(&elements[i], message->mutable_handles()))
-      return false;
-  }
-  return true;
+    std::vector<Handle>* handles) {
+  for (uint32_t i = 0; i < header->num_elements; ++i)
+    DecodeHandle(&elements[i], handles);
 }
 
 // static