Revert of Mojo EDK: Introduce MojoQueryHandleSignalsState API

mojo/edk/system/core.h

 // Copyright 2013 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_EDK_SYSTEM_CORE_H_
 #define MOJO_EDK_SYSTEM_CORE_H_
 
 #include <memory>
 #include <string>
 #include <vector>
@@ skipping 118 matching lines @@
   // The following methods are essentially implementations of the Mojo Core
   // functions of the Mojo API, with the C interface translated to C++ by
   // "mojo/edk/embedder/entrypoints.cc". The best way to understand the contract
   // of these methods is to look at the header files defining the corresponding
   // API functions, referenced below.
 
   // These methods correspond to the API functions defined in
   // "mojo/public/c/system/functions.h":
   MojoTimeTicks GetTimeTicksNow();
   MojoResult Close(MojoHandle handle);
-  MojoResult QueryHandleSignalsState(MojoHandle handle,
-                                     MojoHandleSignalsState* signals_state);
   MojoResult Wait(MojoHandle handle,
                   MojoHandleSignals signals,
                   MojoDeadline deadline,
                   MojoHandleSignalsState* signals_state);
   MojoResult WaitMany(const MojoHandle* handles,
                       const MojoHandleSignals* signals,
                       uint32_t num_handles,
                       MojoDeadline deadline,
                       uint32_t* result_index,
                       MojoHandleSignalsState* signals_states);
@@ skipping 168 matching lines @@
   // Properties that can be read using the MojoGetProperty() API.
   bool property_sync_call_allowed_ = true;
 
   DISALLOW_COPY_AND_ASSIGN(Core);
 };
 
 }  // namespace edk
 }  // namespace mojo
 
 #endif  // MOJO_EDK_SYSTEM_CORE_H_