tree dbb0a52f48b9223aae3f2f05cc3ed44267854696
parent 11a79e755c5e6ca1e548481b7c2b0426d4c8d9c0
author Primiano Tucci <primiano@google.com> 1572383604 +0100
committer Primiano Tucci <primiano@google.com> 1572383604 +0100

UI; unify File/ArrayBuffer/fetch() into TraceStream

This CL unifies the three code paths for loading traces
introducing a TraceStream class. This class exposes
a unified interface for loading a trace in chunks and
provides three implementations for opening a trace from:
(1) A File object; (2) An ArrayBuffer (for window.open());
(3) A url.
Also this CL passes WASM input on a dedicated buffer
rather than on the WASM stack. This allows the bump the
chunk size when loading from file from 1MB to 32MB, upping
significantly the trace load speed because of hitting
JS <> WASM rundtrips less frequently.

Bug: 143074239
Change-Id: I97660b47d26378428be514fc79667cf9408dbdfe