Revert of [Crankshaft] Always check for stubs marked to not require an eager...

Revert of [Crankshaft] Always check for stubs marked to not require an eager frame. (patchset #2 id:20001 of https://codereview.chromium.org/2089673002/ )

Reason for revert:
Breaks with nosnap: https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20nosnap%20-%20debug/builds/7474/steps/Check/logs/regress-2612

Original issue's description:
> [Crankshaft] Always check for stubs marked to not require an eager frame.
>
> Previously only stubs built in the snapshot were checked for having an
> eager frame. This caused a regression to creap in on ia32 for
> RegExpConstructResultStub. Change test to always check.
>
> Committed: https://crrev.com/f6facbb2106ffc2918dd249166233a7fa95dc449
> Cr-Commit-Position: refs/heads/master@{#37162}

TBR=rmcilroy@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review-Url: https://codereview.chromium.org/2087963004
Cr-Commit-Position: refs/heads/master@{#37163}

src/code-stubs-hydrogen.cc

@@ -2061,12 +2061,7 @@ HValue* CodeStubGraphBuilder<RegExpConstructResultStub>::BuildCodeStub() {
   HValue* index = GetParameter(RegExpConstructResultStub::kIndex);
   HValue* input = GetParameter(RegExpConstructResultStub::kInput);
 
-  // TODO(turbofan): This codestub has regressed to need a frame on ia32 at some
-  // point and wasn't caught since it wasn't built in the snapshot. We should
-  // probably just replace with a TurboFan stub rather than fixing it.
-#if !V8_TARGET_ARCH_IA32
   info()->MarkMustNotHaveEagerFrame();
-#endif
 
   return BuildRegExpConstructResult(length, index, input);
 }

src/crankshaft/lithium.cc

@@ -469,7 +469,8 @@ Handle<Code> LChunk::Codegen() {
                                                  jit_handler_data));
 
     CodeGenerator::PrintCode(code, info());
-    DCHECK(!(info()->GetMustNotHaveEagerFrame() &&
+    DCHECK(!(info()->isolate()->serializer_enabled() &&
+             info()->GetMustNotHaveEagerFrame() &&
              generator.NeedsEagerFrame()));
     return code;
   }