Implements JS bindings for mojo data pipe.

third_party/WebKit/Source/core/mojo/MojoHandle.h

Index: third_party/WebKit/Source/core/mojo/MojoHandle.h
diff --git a/third_party/WebKit/Source/core/mojo/MojoHandle.h b/third_party/WebKit/Source/core/mojo/MojoHandle.h
index 61e4048c9319dfebd50acf8cab5b4db12af46f09..6bf880a69f379b80f5ff5e569555b0f4dcd87238 100644
--- a/third_party/WebKit/Source/core/mojo/MojoHandle.h
+++ b/third_party/WebKit/Source/core/mojo/MojoHandle.h
@@ -12,13 +12,18 @@ namespace blink {
 
 class ArrayBufferOrArrayBufferView;
 class MojoCreateSharedBufferResult;
+class MojoDiscardDataOptions;
 class MojoDuplicateBufferHandleOptions;
 class MojoHandleSignals;
 class MojoMapBufferResult;
+class MojoReadDataOptions;
+class MojoReadDataResult;
 class MojoReadMessageFlags;
 class MojoReadMessageResult;
 class MojoWatchCallback;
 class MojoWatcher;
+class MojoWriteDataOptions;
+class MojoWriteDataResult;
 class ScriptState;
 
 class MojoHandle final : public GarbageCollectedFinalized<MojoHandle>,
@@ -38,6 +43,18 @@ class MojoHandle final : public GarbageCollectedFinalized<MojoHandle>,
                           const HeapVector<Member<MojoHandle>>&);
   void readMessage(const MojoReadMessageFlags&, MojoReadMessageResult&);
 
+  // DataPipe handle.
+  void writeData(const ArrayBufferOrArrayBufferView&,
+                 const MojoWriteDataOptions&,
+                 MojoWriteDataResult&);
+  void queryData(MojoReadDataResult&);
+  void discardData(unsigned numBytes,
+                   const MojoDiscardDataOptions&,
+                   MojoReadDataResult&);
+  void readData(ArrayBufferOrArrayBufferView&,
+                const MojoReadDataOptions&,
+                MojoReadDataResult&);
+
   // SharedBuffer handle.
   void mapBuffer(unsigned offset, unsigned numBytes, MojoMapBufferResult&);
   void duplicateBufferHandle(const MojoDuplicateBufferHandleOptions&,