[SharedArrayBuffer] Prevent SharedArrayBuffer being used in Web APIs

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

 // Copyright 2017 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.
 
 #include "core/mojo/MojoHandle.h"
 
 #include "bindings/core/v8/ArrayBufferOrArrayBufferView.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "core/dom/DOMArrayBuffer.h"
 #include "core/dom/DOMArrayBufferView.h"
@@ skipping 43 matching lines @@
       handles.begin(), handles.end(), rawHandles.begin(),
       [](MojoHandle* handle) { return handle->m_handle.release().value(); });
 
   const void* bytes = nullptr;
   uint32_t numBytes = 0;
   if (buffer.isArrayBuffer()) {
     DOMArrayBuffer* array = buffer.getAsArrayBuffer();
     bytes = array->data();
     numBytes = array->byteLength();
   } else {
-    DOMArrayBufferView* view = buffer.getAsArrayBufferView();
+    DOMArrayBufferView* view = buffer.getAsArrayBufferView().view();
     bytes = view->baseAddress();
     numBytes = view->byteLength();
   }
 
   return MojoWriteMessage(m_handle->value(), bytes, numBytes, rawHandles.data(),
                           rawHandles.size(), MOJO_WRITE_MESSAGE_FLAG_NONE);
 }
 
 void MojoHandle::readMessage(const MojoReadMessageFlags& flagsDict,
                              MojoReadMessageResult& resultDict) {
@@ skipping 34 matching lines @@
   if (optionsDict.allOrNone())
     flags |= MOJO_WRITE_DATA_FLAG_ALL_OR_NONE;
 
   const void* elements = nullptr;
   uint32_t numBytes = 0;
   if (buffer.isArrayBuffer()) {
     DOMArrayBuffer* array = buffer.getAsArrayBuffer();
     elements = array->data();
     numBytes = array->byteLength();
   } else {
-    DOMArrayBufferView* view = buffer.getAsArrayBufferView();
+    DOMArrayBufferView* view = buffer.getAsArrayBufferView().view();
     elements = view->baseAddress();
     numBytes = view->byteLength();
   }
 
   MojoResult result =
       MojoWriteData(m_handle->value(), elements, &numBytes, flags);
   resultDict.setResult(result);
   resultDict.setNumBytes(result == MOJO_RESULT_OK ? numBytes : 0);
 }
 
@@ skipping 27 matching lines @@
   if (optionsDict.peek())
     flags |= MOJO_READ_DATA_FLAG_PEEK;
 
   void* elements = nullptr;
   unsigned numBytes = 0;
   if (buffer.isArrayBuffer()) {
     DOMArrayBuffer* array = buffer.getAsArrayBuffer();
     elements = array->data();
     numBytes = array->byteLength();
   } else {
-    DOMArrayBufferView* view = buffer.getAsArrayBufferView();
+    DOMArrayBufferView* view = buffer.getAsArrayBufferView().view();
     elements = view->baseAddress();
     numBytes = view->byteLength();
   }
 
   MojoResult result =
       MojoReadData(m_handle->value(), elements, &numBytes, flags);
   resultDict.setResult(result);
   resultDict.setNumBytes(result == MOJO_RESULT_OK ? numBytes : 0);
 }
 
@@ skipping 26 matching lines @@
   mojo::Handle handle;
   MojoResult result = MojoDuplicateBufferHandle(m_handle->value(), &options,
                                                 handle.mutable_value());
   resultDict.setResult(result);
   if (result == MOJO_RESULT_OK) {
     resultDict.setHandle(MojoHandle::create(mojo::MakeScopedHandle(handle)));
   }
 }
 
 }  // namespace blink