[SharedArrayBuffer] Prevent SharedArrayBuffer being used in Web APIs

third_party/WebKit/Source/modules/mediasource/SourceBuffer.cpp

Index: third_party/WebKit/Source/modules/mediasource/SourceBuffer.cpp
diff --git a/third_party/WebKit/Source/modules/mediasource/SourceBuffer.cpp b/third_party/WebKit/Source/modules/mediasource/SourceBuffer.cpp
index 383ece124c3f67e335e55ae5ec3ce76c5247ebd0..779f32d0931a0c56760eb389812e4cce9c7b3d22 100644
--- a/third_party/WebKit/Source/modules/mediasource/SourceBuffer.cpp
+++ b/third_party/WebKit/Source/modules/mediasource/SourceBuffer.cpp
@@ -359,13 +359,15 @@ void SourceBuffer::appendBuffer(DOMArrayBuffer* data,
                        data->byteLength(), exceptionState);
 }
 
-void SourceBuffer::appendBuffer(DOMArrayBufferView* data,
+void SourceBuffer::appendBuffer(NotShared<DOMArrayBufferView> data,
                                 ExceptionState& exceptionState) {
-  BLINK_SBLOG << __func__ << " this=" << this << " size=" << data->byteLength();
+  BLINK_SBLOG << __func__ << " this=" << this
+              << " size=" << data.view()->byteLength();
   // Section 3.2 appendBuffer()
   // https://dvcs.w3.org/hg/html-media/raw-file/default/media-source/media-source.html#widl-SourceBuffer-appendBuffer-void-ArrayBufferView-data
-  appendBufferInternal(static_cast<const unsigned char*>(data->baseAddress()),
-                       data->byteLength(), exceptionState);
+  appendBufferInternal(
+      static_cast<const unsigned char*>(data.view()->baseAddress()),
+      data.view()->byteLength(), exceptionState);
 }
 
 void SourceBuffer::abort(ExceptionState& exceptionState) {