X87: Parsing: Make Scope not know about Isolate.

X87:  Parsing: Make Scope not know about Isolate.

port 5d68529be240a1fc9fcc67c8950ead4baf7604e4 (r26546)

original commit message:

   Parsing: Make Scope not know about Isolate.

  Scope, like Parser, must be able to operate independent of Isolate and the V8
  heap (for background parsing). After the heap-independent phase, there is a heap
  dependent phase, during which we do operations such as scope anaylysis.

  This CL makes the phases explicit by not telling Scope about the Isolate too
  early (during the heap-independent phase, Scope should know nothing about
  Isolate). This decreases the probability of accidental code changes which would
  add heap-dependent operations into the heap-independent phase.

BUG=
R=weiliang.lin@intel.com

Committed: https://chromium.googlesource.com/v8/v8/+/75ad4cc265d8d580ca09fe51d2101cd77729379c

[chunyang.dai, 2015-02-11 15:46:16]

chunyang.dai@intel.com changed reviewers:
+ weiliang.lin@intel.com

[chunyang.dai, 2015-02-11 15:46:27]

PTAL.

[Weiliang, 2015-02-11 15:47:04]

The CQ bit was checked by weiliang.lin@intel.com

[Weiliang, 2015-02-11 15:47:04]

lgtm

[commit-bot: I haz the power, 2015-02-11 15:47:44]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/913163003/1

[commit-bot: I haz the power, 2015-02-11 15:51:04]

Patchset 1 (id:??) landed as
https://crrev.com/75ad4cc265d8d580ca09fe51d2101cd77729379c
Cr-Commit-Position: refs/heads/master@{#26590}

[chunyang.dai, 2015-02-11 15:51:14]

Committed patchset #1 (id:1) manually as
75ad4cc265d8d580ca09fe51d2101cd77729379c (presubmit successful).