Index: third_party/WebKit/Source/platform/MojoHelper.h |
diff --git a/third_party/WebKit/Source/platform/MojoHelper.h b/third_party/WebKit/Source/platform/MojoHelper.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..eee0a2f0c709a464f7844eb5c5a3666bdd0d961d |
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+++ b/third_party/WebKit/Source/platform/MojoHelper.h |
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+// Copyright 2016 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. |
+ |
+#ifndef MojoHelper_h |
+#define MojoHelper_h |
+ |
+#include "base/bind.h" |
+#include "mojo/public/cpp/bindings/callback.h" |
+#include "mojo/public/cpp/bindings/wtf_array.h" |
+#include "platform/heap/HeapAllocator.h" |
+#include <utility> |
+ |
+namespace blink { |
+ |
+// Binds an instance of a class to its member function. Does not bind anything |
+// else. Provides limited access to base::Bind() function. base::Bind() could |
+// be dangerous if it's used across threads, so we don't want to allow general |
+// use of base::Bind(). See also "platform/ThreadSafeFunctional.h". |
+template <typename Class, typename ReturnType, typename... Args> |
+mojo::Callback<ReturnType(Args...)> |
+sameThreadBindForMojo(ReturnType (Class::*method)(Args...), Class* instance) |
+{ |
+ return base::Bind(method, base::Unretained(instance)); |
+} |
+ |
+} // namespace blink |
+ |
+namespace mojo { |
+ |
+// A |TypeConverter| that will create a |WTFArray<T>| containing a copy of the |
+// contents of a |blink::HeapVector<E>|, using |TypeConverter<T, E>| to copy |
+// each element. The returned array will always be non-null. |
+template <typename T, typename E> |
+struct TypeConverter<WTFArray<T>, blink::HeapVector<E>> { |
+ static WTFArray<T> Convert(const blink::HeapVector<E>& input) |
+ { |
+ WTFArray<T> result(input.size()); |
+ for (size_t i = 0; i < input.size(); ++i) |
+ result[i] = TypeConverter<T, E>::Convert(input[i]); |
+ return std::move(result); |
+ } |
+}; |
+ |
+} // namespace mojo |
+ |
+#endif // MojoHelper_h |