Remving global statics from the headers, so we can split-link.

base/logging.cc

Index: base/logging.cc
diff --git a/base/logging.cc b/base/logging.cc
index 0c4a3027340abf8777e7ad56218e02a3241b021d..f5e44261a81120a98acb0f9c014a9bfe90dc94a7 100644
--- a/base/logging.cc
+++ b/base/logging.cc
@@ -67,6 +67,14 @@ namespace logging {
 
 DcheckState g_dcheck_state = DISABLE_DCHECK_FOR_NON_OFFICIAL_RELEASE_BUILDS;
 
+DcheckState get_dcheck_state() {
+  return g_dcheck_state;
+}
+
+void set_dcheck_state(DcheckState state) {
+  g_dcheck_state = state;
+}
+
 namespace {
 
 VlogInfo* g_vlog_info = NULL;