Stage sloppy block-scoped functions (Annex B 3.3)

Turn on some test262 tests that pass now.

R=adamk
LOG=Y
BUG=v8:4285

Review URL: https://codereview.chromium.org/1357233002

Cr-Commit-Position: refs/heads/master@{#30853}

src/flag-definitions.h

@@ -192,7 +192,6 @@ DEFINE_BOOL(legacy_const, true, "legacy semantics for const in sloppy mode")
   V(harmony_modules, "harmony modules")                       \
   V(harmony_regexps, "harmony regular expression extensions") \
   V(harmony_proxies, "harmony proxies")                       \
-  V(harmony_sloppy_function, "harmony sloppy function block scoping") \
   V(harmony_unicode_regexps, "harmony unicode regexps")       \
   V(harmony_tolength, "harmony ToLength")                     \
   V(harmony_reflect, "harmony Reflect API")                   \
@@ -207,6 +206,7 @@ DEFINE_BOOL(legacy_const, true, "legacy semantics for const in sloppy mode")
   V(harmony_concat_spreadable, "harmony isConcatSpreadable")          \
   V(harmony_rest_parameters, "harmony rest parameters")               \
   V(harmony_sloppy, "harmony features in sloppy mode")                \
+  V(harmony_sloppy_function, "harmony sloppy function block scoping") \
   V(harmony_sloppy_let, "harmony let in sloppy mode")
 
 // Features that are shipping (turned on by default, but internal flag remains).

test/test262-es6/test262-es6.status

@@ -113,15 +113,6 @@
   'language/statements/for-of/const-bound-names-fordecl-tdz-for-of': [PASS, FAIL_SLOPPY],
   'language/statements/for-of/const-fresh-binding-per-iteration-for-of': [PASS, FAIL_SLOPPY],
 
-  # Functions in blocks are var-declared and hoisted in sloppy mode
-  # https://code.google.com/p/v8/issues/detail?id=3305
-  'language/block-scope/shadowing/dynamic-lookup-from-closure': [PASS, FAIL_SLOPPY],
-  'language/block-scope/shadowing/lookup-from-closure': [PASS, FAIL_SLOPPY],
-  'language/block-scope/syntax/redeclaration-in-block/attempt-to-redeclare-function-declaration-with-function-declaration': [PASS, FAIL_SLOPPY],
-  'language/block-scope/syntax/redeclaration-in-block/attempt-to-redeclare-function-declaration-with-var': [PASS, FAIL_SLOPPY],
-  'language/block-scope/syntax/redeclaration-in-block/attempt-to-redeclare-var-with-function-declaration': [PASS, FAIL_SLOPPY],
-  'language/statements/let/block-local-closure-set-before-initialization': [PASS, FAIL_SLOPPY],
-
   # https://code.google.com/p/v8/issues/detail?id=4405
   'language/block-scope/leave/outermost-binding-updated-in-catch-block-nested-block-let-declaration-unseen-outside-of-block': [PASS, FAIL],