Mojo C++ binding: make device/usb mojom targets use STD string/vector types

mojo/common/common_type_converters.h

Index: mojo/common/common_type_converters.h
diff --git a/mojo/common/common_type_converters.h b/mojo/common/common_type_converters.h
index a065f050791d71a72d11cf9f88e648019839a31c..ac6c0c9e483cfbed95f8ff4c269632d1f91af444 100644
--- a/mojo/common/common_type_converters.h
+++ b/mojo/common/common_type_converters.h
@@ -6,6 +6,7 @@
 #define MOJO_COMMON_COMMON_TYPE_CONVERTERS_H_
 
 #include <stdint.h>
+#include <vector>
 
 #include "base/strings/string16.h"
 #include "base/strings/string_piece.h"
@@ -61,6 +62,17 @@ struct MOJO_COMMON_EXPORT TypeConverter<Array<uint8_t>, base::string16> {
   static Array<uint8_t> Convert(const base::string16& input);
 };
 
+template <typename A, typename B>
+struct TypeConverter<std::vector<A>, std::vector<B>> {
+  static std::vector<A> Convert(const std::vector<B>& input) {
+    std::vector<A> result;
+    result.reserve(input.size());
+    for (const B& item : input)
+      result.push_back(mojo::ConvertTo<A>(item));
+    return result;
+  };
+};

[dcheng, 2016/08/15 18:18:15]

Actually, let's not add this type converter please. We should be trying to
reduce usage of this, and adding this will make it easier to add new
dependencies.

That means that this CL will have to use type mapping for device USB types too
(or that should be done in a prerequisite CL)

See https://www.chromium.org/developers/design-documents/mojo/type-mapping for
more information about this.

[Reilly Grant (use Gerrit), 2016/08/15 21:39:02]

As discussed OOB I've moved this to a more private header. Converting device/usb
to use typemaps is a larger project than I want to tackle in this CL.

+
 }  // namespace mojo
 
 #endif  // MOJO_COMMON_COMMON_TYPE_CONVERTERS_H_