Fix remaining warnings for -Wmissing-braces and enable on win clang.

components/policy/core/common/policy_loader_win.cc

Index: components/policy/core/common/policy_loader_win.cc
diff --git a/components/policy/core/common/policy_loader_win.cc b/components/policy/core/common/policy_loader_win.cc
index f199a20d6593d0dc2f57a688c1ab072203b0eae7..93d06d2c8263a088ddf20a8dbe8fbc35458a7f0b 100644
--- a/components/policy/core/common/policy_loader_win.cc
+++ b/components/policy/core/common/policy_loader_win.cc
@@ -84,8 +84,15 @@ const char* kInsecurePolicies[] = {
     key::kRestoreOnStartupURLs
 };
 
+#pragma warning(push)
+#pragma warning(disable: 4068)  // unknown pragmas

[Nico, 2015/07/08 05:17:27]

alternatively `#ifdef __clang__` i guess.

Do you need the clang diagnostic push if you have warning(push) already? I think
clang might support warning(push) / (pop) in msvc mode (?)

[dcheng, 2015/07/08 08:02:49]

This seems to work. Done.

+#pragma clang diagnostic push
+// TODO(dcheng): Remove pragma once http://llvm.org/PR24007 is fixed.
+#pragma clang diagnostic ignored "-Wmissing-braces"
 // The GUID of the registry settings group policy extension.
 GUID kRegistrySettingsCSEGUID = REGISTRY_EXTENSION_GUID;
+#pragma clang diagnostic pop
+#pragma warning(pop)
 
 // The list of possible errors that can occur while collecting information about
 // the current enterprise environment.