[compiler] Add missing V8_NOEXCEPT annotations

This silences the new presubmit check for the whole src/compiler
directory.

R=neis@chromium.org

Bug: v8:8616
Change-Id: Ib76d669861f829b4f35f9e9921b72b073300da08
Reviewed-on: https://chromium-review.googlesource.com/c/1386871Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58411}

src/compiler/node-origin-table.h

@@ -33,7 +33,7 @@ class NodeOrigin {
         origin_kind_(origin_kind),
         created_from_(created_from) {}
 
-  NodeOrigin(const NodeOrigin& other) = default;
+  NodeOrigin(const NodeOrigin& other) V8_NOEXCEPT = default;
   static NodeOrigin Unknown() { return NodeOrigin(); }
 
   bool IsKnown() { return created_from_ >= 0; }

src/compiler/store-store-elimination.cc

@@ -100,7 +100,7 @@ class UnobservablesSet final {
   static UnobservablesSet Unvisited();
   static UnobservablesSet VisitedEmpty(Zone* zone);
   UnobservablesSet();  // unvisited
-  UnobservablesSet(const UnobservablesSet& other) = default;
+  UnobservablesSet(const UnobservablesSet& other) V8_NOEXCEPT = default;
 
   UnobservablesSet Intersect(const UnobservablesSet& other, Zone* zone) const;
   UnobservablesSet Add(UnobservableStore obs, Zone* zone) const;