third_party/mojo: Remove python/go/dart bindings.

third_party/mojo/src/mojo/public/go/system/shared_buffer.go

Index: third_party/mojo/src/mojo/public/go/system/shared_buffer.go
diff --git a/third_party/mojo/src/mojo/public/go/system/shared_buffer.go b/third_party/mojo/src/mojo/public/go/system/shared_buffer.go
deleted file mode 100644
index f3048f877918d78252457048ddbb66abf732f116..0000000000000000000000000000000000000000
--- a/third_party/mojo/src/mojo/public/go/system/shared_buffer.go
+++ /dev/null
@@ -1,75 +0,0 @@
-// Copyright 2015 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.
-
-package system
-
-import (
-	"reflect"
-	"unsafe"
-)
-
-// SharedBufferHandle is a handle for a buffer that can be shared between
-// applications.
-type SharedBufferHandle interface {
-	Handle
-
-	// DuplicateBufferHandle duplicates the handle to a buffer.
-	DuplicateBufferHandle(opts *DuplicateBufferHandleOptions) (MojoResult, SharedBufferHandle)
-
-	// MapBuffer maps the requested part of the shared buffer given by handle
-	// into memory with specified flags. On success, it returns slice that
-	// points to the requested shared buffer.
-	MapBuffer(offset uint64, numBytes int, flags MojoMapBufferFlags) (MojoResult, []byte)
-
-	// UnmapBuffer unmaps a buffer that was returned by MapBuffer.
-	UnmapBuffer(buffer []byte) MojoResult
-}
-
-type sharedBuffer struct {
-	// baseHandle should always be the first component of this struct,
-	// see |finalizeHandle()| for more details.
-	baseHandle
-}
-
-func (h *sharedBuffer) DuplicateBufferHandle(opts *DuplicateBufferHandleOptions) (MojoResult, SharedBufferHandle) {
-	var flags uint32
-	if opts != nil {
-		flags = uint32(opts.Flags)
-	}
-	h.core.mu.Lock()
-	r, dup := sysImpl.DuplicateBufferHandle(uint32(h.mojoHandle), flags)
-	h.core.mu.Unlock()
-	return MojoResult(r), core.AcquireNativeHandle(MojoHandle(dup)).ToSharedBufferHandle()
-}
-
-func (h *sharedBuffer) MapBuffer(offset uint64, numBytes int, flags MojoMapBufferFlags) (MojoResult, []byte) {
-	h.core.mu.Lock()
-	r, buf := sysImpl.MapBuffer(uint32(h.mojoHandle), offset, uint64(numBytes), uint32(flags))
-	h.core.mu.Unlock()
-	if r != 0 {
-		return MojoResult(r), nil
-	}
-
-	return MojoResult(r), buf
-}
-
-func (h *sharedBuffer) UnmapBuffer(buffer []byte) MojoResult {
-	h.core.mu.Lock()
-	r := sysImpl.UnmapBuffer(buffer)
-	h.core.mu.Unlock()
-	return MojoResult(r)
-}
-
-func newUnsafeSlice(ptr unsafe.Pointer, length int) unsafe.Pointer {
-	header := &reflect.SliceHeader{
-		Data: uintptr(ptr),
-		Len:  length,
-		Cap:  length,
-	}
-	return unsafe.Pointer(header)
-}
-
-func unsafeByteSlice(ptr unsafe.Pointer, length int) []byte {
-	return *(*[]byte)(newUnsafeSlice(ptr, length))
-}