Adds Mojo IDL.

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

Index: third_party/WebKit/Source/core/mojo/Mojo.h
diff --git a/third_party/WebKit/Source/core/mojo/Mojo.h b/third_party/WebKit/Source/core/mojo/Mojo.h
new file mode 100644
index 0000000000000000000000000000000000000000..c0a1fd0af4288040db966d6e1f58e034aaf3a586
--- /dev/null
+++ b/third_party/WebKit/Source/core/mojo/Mojo.h
@@ -0,0 +1,116 @@
+// 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 Mojo_h
+#define Mojo_h
+
+#include "bindings/core/v8/ScriptWrappable.h"
+#include "core/mojo/MojoHandleWatcher.h"
+
+namespace blink {
+
+class DOMArrayBuffer;
+class MojoCreateMessagePipeOptions;
+class MojoCreateMessagePipeResult;
+class MojoHandle;
+class MojoMessagePipeHandle;
+class MojoReadMessageResult;
+class MojoWatchCallback;
+class ScriptState;
+
+class Mojo final : public GarbageCollectedFinalized<Mojo>,
+                   public ScriptWrappable {
+  DEFINE_WRAPPERTYPEINFO();
+
+ public:
+  CORE_EXPORT static Mojo* create();
+  virtual ~Mojo();
+
+  // MojoResult
+  static const MojoResult kResultOk = MOJO_HANDLE_SIGNAL_NONE;
+  static const MojoResult kResultCancelled = MOJO_RESULT_CANCELLED;
+  static const MojoResult kResultUnknown = MOJO_RESULT_UNKNOWN;
+  static const MojoResult kResultInvalidArgument = MOJO_RESULT_INVALID_ARGUMENT;
+  static const MojoResult kResultDeadlineExceeded =
+      MOJO_RESULT_DEADLINE_EXCEEDED;
+  static const MojoResult kResultNotFound = MOJO_RESULT_NOT_FOUND;
+  static const MojoResult kResultAlreadyExists = MOJO_RESULT_ALREADY_EXISTS;
+  static const MojoResult kResultPermissionDenied =
+      MOJO_RESULT_PERMISSION_DENIED;
+  static const MojoResult kResultResourceExhausted =
+      MOJO_RESULT_RESOURCE_EXHAUSTED;
+  static const MojoResult kResultFailedPrecondition =
+      MOJO_RESULT_FAILED_PRECONDITION;
+  static const MojoResult kResultAborted = MOJO_RESULT_ABORTED;
+  static const MojoResult kResultOutOfRange = MOJO_RESULT_OUT_OF_RANGE;
+  static const MojoResult kResultUnimplemented = MOJO_RESULT_UNIMPLEMENTED;
+  static const MojoResult kResultInternal = MOJO_RESULT_INTERNAL;
+  static const MojoResult kResultUnavailable = MOJO_RESULT_UNAVAILABLE;
+  static const MojoResult kResultDataLoss = MOJO_RESULT_DATA_LOSS;
+  static const MojoResult kResultBusy = MOJO_RESULT_BUSY;
+  static const MojoResult kResultShouldWait = MOJO_RESULT_SHOULD_WAIT;
+
+  // MojoHandleSignals
+  static const MojoHandleSignals kHandleSignalNone = MOJO_HANDLE_SIGNAL_NONE;
+  static const MojoHandleSignals kHandleSignalReadable =
+      MOJO_HANDLE_SIGNAL_READABLE;
+  static const MojoHandleSignals kHandleSignalWritable =
+      MOJO_HANDLE_SIGNAL_WRITABLE;
+  static const MojoHandleSignals kHandleSignalPeerClosed =
+      MOJO_HANDLE_SIGNAL_PEER_CLOSED;
+
+  // MessagePipe flags.
+  static const MojoCreateMessagePipeOptionsFlags
+      kCreateMessagePipeOptionsFlagNone =
+          MOJO_CREATE_MESSAGE_PIPE_OPTIONS_FLAG_NONE;
+  static const MojoWriteMessageFlags kWriteMessageFlagNone =
+      MOJO_WRITE_MESSAGE_FLAG_NONE;
+  static const MojoReadMessageFlags kReadMessageFlagNone =
+      MOJO_READ_MESSAGE_FLAG_NONE;
+  static const MojoReadMessageFlags kReadMessageFlagMayDiscard =
+      MOJO_READ_MESSAGE_FLAG_MAY_DISCARD;
+
+  unsigned watch(ScriptState*,
+                 MojoHandle*,
+                 MojoHandleSignals,
+                 MojoWatchCallback*);
+  void cancelWatch(unsigned watchId);
+
+  void createMessagePipe(const MojoCreateMessagePipeOptions&,
+                         MojoCreateMessagePipeResult&);
+  MojoResult writeMessage(MojoMessagePipeHandle*,
+                          DOMArrayBuffer*,
+                          const HeapVector<Member<MojoHandle>>&,
+                          MojoWriteMessageFlags);
+  void readMessage(MojoMessagePipeHandle*,
+                   MojoReadMessageFlags,
+                   MojoReadMessageResult&);
+
+  DECLARE_TRACE();
+
+ private:
+  class WatchEntry : public GarbageCollectedFinalized<WatchEntry> {
+   public:
+    WatchEntry(WebTaskRunner* taskRunner) : m_watcher(taskRunner) {}
+    DECLARE_TRACE();
+
+   private:
+    friend class Mojo;
+    MojoHandleWatcher m_watcher;
+    RefPtr<ScriptState> m_scriptState;
+    Member<MojoWatchCallback> m_callback;
+  };
+  using WatchMap = HeapHashMap<unsigned, Member<WatchEntry>>;
+
+  Mojo(std::unique_ptr<WebTaskRunner>);
+  void watchCallback(unsigned, MojoResult);
+
+  std::unique_ptr<WebTaskRunner> m_taskRunner;
+  unsigned m_nextWatchId;
+  WatchMap m_watchMap;
+};
+
+}  // namespace blink
+
+#endif  // Mojo_h