Revert of Fix logic for doing incremental marking steps on tenured allocation.

Revert of Fix logic for doing incremental marking steps on tenured allocation. (patchset #4 id:60001 of https://codereview.chromium.org/1040233003/)

Reason for revert:
Suspected of triggering memory corruption issues, e.g. crbug.com/478401.

Original issue's description:
> Fix logic for doing incremental marking steps on tenured allocation.
>
> R=hpayer@chromium.org
> BUG=
>
> Committed: https://crrev.com/9716468ae63500adb74f5188c47de847e195d71b
> Cr-Commit-Position: refs/heads/master@{#27883}

TBR=hpayer@chromium.org,erikcorry@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Committed: https://crrev.com/c12e8d889c282e9a8d1b63e616dbbdc976995f4d
Cr-Commit-Position: refs/heads/master@{#27944}

[Jakob Kummerow, 2015-04-20 15:07:48]

Created Revert of Fix logic for doing incremental marking steps on tenured
allocation.

[Jakob Kummerow, 2015-04-20 15:09:38]

The CQ bit was checked by jkummerow@chromium.org

[commit-bot: I haz the power, 2015-04-20 15:09:48]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1099633002/1

[commit-bot: I haz the power, 2015-04-20 15:10:03]

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

[commit-bot: I haz the power, 2015-04-20 15:10:04]

Failed to apply patch for src/heap/incremental-marking.cc:
While running git apply --index -3 -p1;
  error: patch failed: src/heap/incremental-marking.cc:821
  error: repository lacks the necessary blob to fall back on 3-way merge.
  error: src/heap/incremental-marking.cc: patch does not apply

Patch:       src/heap/incremental-marking.cc
Index: src/heap/incremental-marking.cc
diff --git a/src/heap/incremental-marking.cc b/src/heap/incremental-marking.cc
index
d854bfbc7cd361eeb2e3f7235e931ee0930ecdd5..dfcd68a3d34326388682265bf937aadf340991c3
100644
--- a/src/heap/incremental-marking.cc
+++ b/src/heap/incremental-marking.cc
@@ -821,7 +821,7 @@
   if (IsStopped() && ShouldActivate()) {
     Start();
   } else {
-    Step(allocated * kOldSpaceAllocationMarkingFactor, GC_VIA_STACK_GUARD);
+    Step(allocated * kFastMarking / kInitialMarkingSpeed, GC_VIA_STACK_GUARD);
   }
 }
 
@@ -897,7 +897,8 @@
                                   ForceMarkingAction marking,
                                   ForceCompletionAction completion) {
   if (heap_->gc_state() != Heap::NOT_IN_GC || !FLAG_incremental_marking ||
-      !CanDoSteps()) {
+      !FLAG_incremental_marking_steps ||
+      (state_ != SWEEPING && state_ != MARKING)) {
     return 0;
   }

[Jakob Kummerow, 2015-04-20 15:19:22]

The CQ bit was checked by jkummerow@chromium.org

[commit-bot: I haz the power, 2015-04-20 15:19:34]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1099633002/130001

[commit-bot: I haz the power, 2015-04-20 15:19:47]

Committed patchset #2 (id:130001)

[commit-bot: I haz the power, 2015-04-20 15:19:58]

Patchset 2 (id:??) landed as
https://crrev.com/c12e8d889c282e9a8d1b63e616dbbdc976995f4d
Cr-Commit-Position: refs/heads/master@{#27944}