[arraybuffer][cleanup] Remove ArrayBufferView::SetImpl

R=haraken@chromium.org

Bug: chromium:1008840
Change-Id: I87a6ae4adfd36f3893c6eb8280931da2849b38ba
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1929215Reviewed-by: Kentaro Hara <haraken@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#718042}

third_party/blink/renderer/core/typed_arrays/array_buffer/array_buffer_view.h

@@ -78,8 +78,6 @@ class CORE_EXPORT ArrayBufferView : public RefCounted<ArrayBufferView> {
  protected:
   ArrayBufferView(scoped_refptr<ArrayBuffer>, unsigned byte_offset);
 
-  inline bool SetImpl(ArrayBufferView*, unsigned byte_offset);
-
   // Helper to verify that a given sub-range of an ArrayBuffer is
   // within range.
   template <typename T>
@@ -112,19 +110,6 @@ class CORE_EXPORT ArrayBufferView : public RefCounted<ArrayBufferView> {
   scoped_refptr<ArrayBuffer> buffer_;
 };
 
-bool ArrayBufferView::SetImpl(ArrayBufferView* array, unsigned byte_offset) {
-  if (byte_offset > ByteLength() ||
-      byte_offset + array->ByteLength() > ByteLength() ||
-      byte_offset + array->ByteLength() < byte_offset) {
-    // Out of range offset or overflow
-    return false;
-  }
-
-  char* base = static_cast<char*>(BaseAddress());
-  memmove(base + byte_offset, array->BaseAddress(), array->ByteLength());
-  return true;
-}
-
 }  // namespace blink
 
 #endif  // THIRD_PARTY_BLINK_RENDERER_CORE_TYPED_ARRAYS_ARRAY_BUFFER_ARRAY_BUFFER_VIEW_H_