Revert of [turbofan] Add language mode to JSCallFunction operator.

Revert of [turbofan] Add language mode to JSCallFunction operator. (patchset #1 id:1 of https://codereview.chromium.org/1107883002/)

Reason for revert:
[Sheriff] breaks win compile and was committed manually

Original issue's description:
> [turbofan] Add language mode to JSCallFunction operator.
> 
> Also do some drive-by-cleanup to the unittests.
> 
> R=svenpanne@chromium.org
> 
> Committed: https://chromium.googlesource.com/v8/v8/+/2d827809e0a20fc60faa3be87ba9357bbded4a4c

TBR=svenpanne@chromium.org,bmeurer@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

[Michael Achenbach, 2015-04-27 10:59:30]

Created Revert of [turbofan] Add language mode to JSCallFunction operator.

[commit-bot: I haz the power, 2015-04-27 10:59:36]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1103143002/1

[commit-bot: I haz the power, 2015-04-27 10:59:43]

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

[commit-bot: I haz the power, 2015-04-27 10:59:44]

Failed to apply patch for src/compiler/js-operator.h:
While running git apply --index -3 -p1;
  error: patch failed: src/compiler/js-operator.h:287
  error: repository lacks the necessary blob to fall back on 3-way merge.
  error: src/compiler/js-operator.h: patch does not apply

Patch:       src/compiler/js-operator.h
Index: src/compiler/js-operator.h
diff --git a/src/compiler/js-operator.h b/src/compiler/js-operator.h
index
c30da196aa134057f317868b1f39af3df1daa938..bdb0c9c7d4411912e8ca2e0e3721223ccd66ed48
100644
--- a/src/compiler/js-operator.h
+++ b/src/compiler/js-operator.h
@@ -21,35 +21,19 @@
 // used as a parameter by JSCallFunction operators.
 class CallFunctionParameters final {
  public:
-  CallFunctionParameters(size_t arity, CallFunctionFlags flags,
-                         LanguageMode language_mode)
-      : bit_field_(ArityField::encode(arity) | FlagsField::encode(flags) |
-                   LanguageModeField::encode(language_mode)) {}
-
-  size_t arity() const { return ArityField::decode(bit_field_); }
-  CallFunctionFlags flags() const { return FlagsField::decode(bit_field_); }
-  LanguageMode language_mode() const {
-    return LanguageModeField::decode(bit_field_);
-  }
-
-  bool operator==(CallFunctionParameters const& that) const {
-    return this->bit_field_ == that.bit_field_;
-  }
-  bool operator!=(CallFunctionParameters const& that) const {
-    return !(*this == that);
-  }
-
- private:
-  friend size_t hash_value(CallFunctionParameters const& p) {
-    return p.bit_field_;
-  }
-
-  typedef BitField<unsigned, 0, 28> ArityField;
-  typedef BitField<CallFunctionFlags, 28, 2> FlagsField;
-  typedef BitField<LanguageMode, 30, 2> LanguageModeField;
-
-  const uint32_t bit_field_;
-};
+  CallFunctionParameters(size_t arity, CallFunctionFlags flags)
+      : arity_(arity), flags_(flags) {}
+
+  size_t arity() const { return arity_; }
+  CallFunctionFlags flags() const { return flags_; }
+
+ private:
+  const size_t arity_;
+  const CallFunctionFlags flags_;
+};
+
+bool operator==(CallFunctionParameters const&, CallFunctionParameters const&);
+bool operator!=(CallFunctionParameters const&, CallFunctionParameters const&);
 
 size_t hash_value(CallFunctionParameters const&);
 
@@ -287,8 +271,7 @@
   const Operator* CreateClosure(Handle<SharedFunctionInfo> shared_info,
                                 PretenureFlag pretenure);
 
-  const Operator* CallFunction(size_t arity, CallFunctionFlags flags,
-                               LanguageMode language_mode);
+  const Operator* CallFunction(size_t arity, CallFunctionFlags flags);
   const Operator* CallRuntime(Runtime::FunctionId id, size_t arity);
 
   const Operator* CallConstruct(int arguments);

[Michael Achenbach, 2015-04-27 11:04:57]

The committed patch wasn't uploaded to rietveld :/