2 files changed, 103 insertions, 0 deletions
diff --git a/chromium/third_party/blink/common/page/OWNERS b/chromium/third_party/blink/common/page/OWNERS
new file mode 100644
index 00000000000..d5fefd82012
--- /dev/null
+++ b/chromium/third_party/blink/common/page/OWNERS
@@ -0,0 +1,2 @@
+per-file *_mojom_traits*.*=set noparent
+per-file *_mojom_traits*.*=file://ipc/SECURITY_OWNERS
diff --git a/chromium/third_party/blink/common/page/drag_mojom_traits.cc b/chromium/third_party/blink/common/page/drag_mojom_traits.cc
new file mode 100644
index 00000000000..54dc3f1e7a2
--- /dev/null
+++ b/chromium/third_party/blink/common/page/drag_mojom_traits.cc
@@ -0,0 +1,101 @@
+// Copyright 2020 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.
+
+#include "third_party/blink/public/common/page/drag_mojom_traits.h"
+
+#include "base/notreached.h"
+
+namespace {
+
+constexpr int allow_all =
+    blink::kWebDragOperationCopy | blink::kWebDragOperationLink |
+    blink::kWebDragOperationGeneric | blink::kWebDragOperationPrivate |
+    blink::kWebDragOperationMove | blink::kWebDragOperationDelete;
+
+}  // namespace
+
+namespace mojo {
+
+// static
+blink::mojom::DragOperation
+EnumTraits<blink::mojom::DragOperation, blink::WebDragOperation>::ToMojom(
+    blink::WebDragOperation op) {
+  switch (op) {
+    case blink::kWebDragOperationNone:
+      return blink::mojom::DragOperation::kNone;
+    case blink::kWebDragOperationCopy:
+      return blink::mojom::DragOperation::kCopy;
+    case blink::kWebDragOperationLink:
+      return blink::mojom::DragOperation::kLink;
+    case blink::kWebDragOperationGeneric:
+      return blink::mojom::DragOperation::kGeneric;
+    case blink::kWebDragOperationPrivate:
+      return blink::mojom::DragOperation::kPrivate;
+    case blink::kWebDragOperationMove:
+      return blink::mojom::DragOperation::kMove;
+    case blink::kWebDragOperationDelete:
+      return blink::mojom::DragOperation::kDelete;
+    default:
+      // blink::kWebDragOperationEvery is not handled on purpose, as
+      // DragOperation should only represent a single operation.
+      NOTREACHED();
+      return blink::mojom::DragOperation::kNone;
+  }
+}
+
+// static
+bool EnumTraits<blink::mojom::DragOperation, blink::WebDragOperation>::
+    FromMojom(blink::mojom::DragOperation op, blink::WebDragOperation* out) {
+  switch (op) {
+    case blink::mojom::DragOperation::kNone:
+      *out = blink::kWebDragOperationNone;
+      return true;
+    case blink::mojom::DragOperation::kCopy:
+      *out = blink::kWebDragOperationCopy;
+      return true;
+    case blink::mojom::DragOperation::kLink:
+      *out = blink::kWebDragOperationLink;
+      return true;
+    case blink::mojom::DragOperation::kGeneric:
+      *out = blink::kWebDragOperationGeneric;
+      return true;
+    case blink::mojom::DragOperation::kPrivate:
+      *out = blink::kWebDragOperationPrivate;
+      return true;
+    case blink::mojom::DragOperation::kMove:
+      *out = blink::kWebDragOperationMove;
+      return true;
+    case blink::mojom::DragOperation::kDelete:
+      *out = blink::kWebDragOperationDelete;
+      return true;
+  }
+  NOTREACHED();
+  return false;
+}
+
+// static
+bool StructTraits<blink::mojom::AllowedDragOperationsDataView,
+                  blink::WebDragOperationsMask>::
+    Read(blink::mojom::AllowedDragOperationsDataView data,
+         blink::WebDragOperationsMask* out) {
+  int op_mask = blink::kWebDragOperationNone;
+  if (data.allow_copy())
+    op_mask |= blink::kWebDragOperationCopy;
+  if (data.allow_link())
+    op_mask |= blink::kWebDragOperationLink;
+  if (data.allow_generic())
+    op_mask |= blink::kWebDragOperationGeneric;
+  if (data.allow_private())
+    op_mask |= blink::kWebDragOperationPrivate;
+  if (data.allow_move())
+    op_mask |= blink::kWebDragOperationMove;
+  if (data.allow_delete())
+    op_mask |= blink::kWebDragOperationDelete;
+  if (op_mask == allow_all)
+    op_mask = blink::kWebDragOperationEvery;
+  *out = static_cast<blink::WebDragOperationsMask>(op_mask);
+  return true;
+}
+
+}  // namespace mojo