Revert of Remove support for thread-based recompilation

Revert of Remove support for thread-based recompilation (patchset #1 id:1 of https://codereview.chromium.org/966653002/)

Reason for revert:
speculative revert due to gc-stress timeouts.

Original issue's description:
> Remove support for thread-based recompilation
>
> BUG=v8:3608
> R=yangguo@chromium.org
> LOG=y
>
> Committed: https://crrev.com/ed5db223a19dfe126af012e894582251aa3635d7
> Cr-Commit-Position: refs/heads/master@{#27619}

TBR=jochen@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
BUG=v8:3608
LOG=N

Committed: https://crrev.com/c4081d2503b9a7a83ec5243ec95ca3ee90dc38f2
Cr-Commit-Position: refs/heads/master@{#27654}

[Yang, 2015-04-08 09:31:58]

Created Revert of Remove support for thread-based recompilation

[commit-bot: I haz the power, 2015-04-08 09:32:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1063383004/1

[commit-bot: I haz the power, 2015-04-08 09:32:34]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-04-08 09:32:35]

Failed to apply patch for src/cpu-profiler.h:
While running git apply --index -3 -p1;
  error: patch failed: src/cpu-profiler.h:10
  error: repository lacks the necessary blob to fall back on 3-way merge.
  error: src/cpu-profiler.h: patch does not apply

Patch:       src/cpu-profiler.h
Index: src/cpu-profiler.h
diff --git a/src/cpu-profiler.h b/src/cpu-profiler.h
index
9c6ba616fd16b693ae7bb8ef8b2c62106f40b933..d8341d823837e69be7a1ec7d697cc22bbfcc81db
100644
--- a/src/cpu-profiler.h
+++ b/src/cpu-profiler.h
@@ -10,7 +10,7 @@
 #include "src/base/platform/time.h"
 #include "src/circular-queue.h"
 #include "src/sampler.h"
-#include "src/unbound-queue-inl.h"
+#include "src/unbound-queue.h"
 
 namespace v8 {
 namespace internal {

[commit-bot: I haz the power, 2015-04-08 09:32:46]

The CQ bit was unchecked by commit-bot@chromium.org

[Yang, 2015-04-08 09:54:16]

The CQ bit was checked by yangguo@chromium.org

[Yang, 2015-04-08 09:54:19]

The CQ bit was unchecked by yangguo@chromium.org

[Yang, 2015-04-08 09:56:56]

The CQ bit was checked by yangguo@chromium.org

[commit-bot: I haz the power, 2015-04-08 09:57:17]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1063383004/150001

[commit-bot: I haz the power, 2015-04-08 10:29:33]

Committed patchset #2 (id:150001)

[commit-bot: I haz the power, 2015-04-08 10:29:42]

Patchset 2 (id:??) landed as
https://crrev.com/c4081d2503b9a7a83ec5243ec95ca3ee90dc38f2
Cr-Commit-Position: refs/heads/master@{#27654}