Add mojo service for CopylessPaste in Blink

third_party/WebKit/public/BUILD.gn

Index: third_party/WebKit/public/BUILD.gn
diff --git a/third_party/WebKit/public/BUILD.gn b/third_party/WebKit/public/BUILD.gn
index f57eabd0dd28c22f7b8e5a5b9905df4bcbbcbdd5..b08d7ec8604ce06ed187c26fa0c95cd47008cbce 100644
--- a/third_party/WebKit/public/BUILD.gn
+++ b/third_party/WebKit/public/BUILD.gn
@@ -702,6 +702,7 @@ mojom("mojo_bindings") {
     "platform/modules/bluetooth/web_bluetooth.mojom",
     "platform/modules/broadcastchannel/broadcast_channel.mojom",
     "platform/modules/budget_service/budget_service.mojom",
+    "platform/modules/document_metadata/copyless_paste.mojom",

[dproctor, 2017/03/31 23:18:14]

I think you want to put this instead in android_mojo_bindings below, so that it
is visible in clank?

[wychen, 2017/04/01 05:16:00]

It's still visible in clank.
See
https://cs.chromium.org/chromium/src/chrome/android/BUILD.gn?type=cs&q=public...
And it worked in https://codereview.chromium.org/2700193002/.

I'll move it below since it looks better.

[dproctor, 2017/04/03 17:43:10]

Ah, sorry for the confusion, but the internal clank only imports
//third_party/WebKit/public:android_mojo_bindings_java.

[wychen, 2017/04/05 19:25:50]

Done.

     "platform/modules/fetch/fetch_api_request.mojom",
     "platform/modules/hyphenation/hyphenation.mojom",
     "platform/modules/mediasession/media_session.mojom",