Make BitsetType enum uint32_t to avoid narrowing warnings

Make BitsetType enum uint32_t to avoid narrowing warnings

enum defaults to signed on win, and kTagged has 1<<31 causing
warning.

Full errors:

d:\src\cr3\src\v8\src\types.cc(1259): error C2220: warning treated as error - no 'object' file generated
d:\src\cr3\src\v8\src\types.cc(1241): note: while compiling class template member function 'void v8::internal::TypeImpl<v8::internal::ZoneTypeConfig>::BitsetType::Print(std::ostream &,v8::internal::TypeImpl<v8::internal::ZoneTypeConfig>::bitset)'
d:\src\cr3\src\v8\src\types.cc(1283): note: see reference to function template instantiation 'void v8::internal::TypeImpl<v8::internal::ZoneTypeConfig>::BitsetType::Print(std::ostream &,v8::internal::TypeImpl<v8::internal::ZoneTypeConfig>::bitset)' being compiled
d:\src\cr3\src\v8\src\types.cc(1355): note: see reference to class template instantiation 'v8::internal::TypeImpl<v8::internal::ZoneTypeConfig>::BitsetType' being compiled
d:\src\cr3\src\v8\src\types.cc(1259): warning C4838: conversion from 'int' to 'const v8::internal::TypeImpl<v8::internal::ZoneTypeConfig>::bitset' requires a narrowing conversion
d:\src\cr3\src\v8\src\types.cc(1259): note: to simplify migration, consider the temporary use of /Wv:18 flag with the version of the compiler with which you used to build without warnings
d:\src\cr3\src\v8\src\types.cc(323): warning C4838: conversion from '' to 'v8::internal::TypeImpl<v8::internal::ZoneTypeConfig>::bitset' requires a narrowing conversion
d:\src\cr3\src\v8\src\types.cc(323): note: to simplify migration, consider the temporary use of /Wv:18 flag with the version of the compiler with which you used to build without warnings
d:\src\cr3\src\v8\src\types.cc(315): note: while compiling class template static data member 'const v8::internal::TypeImpl<v8::internal::ZoneTypeConfig>::BitsetType::Boundary v8::internal::TypeImpl<v8::internal::ZoneTypeConfig>::BitsetType::BoundariesArray[]'
d:\src\cr3\src\v8\src\types.cc(1259): warning C4838: conversion from 'int' to 'const v8::internal::TypeImpl<v8::internal::HeapTypeConfig>::bitset' requires a narrowing conversion
d:\src\cr3\src\v8\src\types.cc(1259): note: to simplify migration, consider the temporary use of /Wv:18 flag with the version of the compiler with which you used to build without warnings
d:\src\cr3\src\v8\src\types.cc(1241): note: while compiling class template member function 'void v8::internal::TypeImpl<v8::internal::HeapTypeConfig>::BitsetType::Print(std::ostream &,v8::internal::TypeImpl<v8::internal::HeapTypeConfig>::bitset)'
d:\src\cr3\src\v8\src\types.cc(1283): note: see reference to function template instantiation 'void v8::internal::TypeImpl<v8::internal::HeapTypeConfig>::BitsetType::Print(std::ostream &,v8::internal::TypeImpl<v8::internal::HeapTypeConfig>::bitset)' being compiled
d:\src\cr3\src\v8\src\types.cc(1359): note: see reference to class template instantiation 'v8::internal::TypeImpl<v8::internal::HeapTypeConfig>::BitsetType' being compiled
d:\src\cr3\src\v8\src\types.cc(323): warning C4838: conversion from '' to 'v8::internal::TypeImpl<v8::internal::HeapTypeConfig>::bitset' requires a narrowing conversion
d:\src\cr3\src\v8\src\types.cc(323): note: to simplify migration, consider the temporary use of /Wv:18 flag with the version of the compiler with which you used to build without warnings
d:\src\cr3\src\v8\src\types.cc(315): note: while compiling class template static data member 'const v8::internal::TypeImpl<v8::internal::HeapTypeConfig>::BitsetType::Boundary v8::internal::TypeImpl<v8::internal::HeapTypeConfig>::BitsetType::BoundariesArray[]'

LOG=N
R=jochen@chromium.org
BUG=440500
Committed: https://crrev.com/df087b23edc79a8b5ec900c921088bcefb291850
Cr-Commit-Position: refs/heads/master@{#27854}

[scottmg, 2015-04-14 22:35:37]

scottmg@chromium.org changed reviewers:
+ jochen@chromium.org

[jochen (gone - plz use gerrit), 2015-04-15 15:27:29]

lgtm

[scottmg, 2015-04-15 15:58:02]

The CQ bit was checked by scottmg@chromium.org

[commit-bot: I haz the power, 2015-04-15 15:58:16]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1055933004/1

[commit-bot: I haz the power, 2015-04-15 16:05:43]

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

[commit-bot: I haz the power, 2015-04-15 16:05:43]

Try jobs failed on following builders:
  v8_presubmit on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_presubmit/builds/2022)

[scottmg, 2015-04-15 16:12:35]

The CQ bit was checked by scottmg@chromium.org

[commit-bot: I haz the power, 2015-04-15 16:12:49]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1055933004/1

[commit-bot: I haz the power, 2015-04-15 16:31:47]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-15 16:31:56]

Patchset 1 (id:??) landed as
https://crrev.com/df087b23edc79a8b5ec900c921088bcefb291850
Cr-Commit-Position: refs/heads/master@{#27854}