[sanitizer] Introduce VReport and VPrintf macros and use them in sanitizer code.

Instead of "if (common_flags()->verbosity) Report(...)" we now have macros.

llvm-svn: 196497
diff --git a/compiler-rt/lib/msan/msan_report.cc b/compiler-rt/lib/msan/msan_report.cc
index e3ef993..83c1fbb 100644
--- a/compiler-rt/lib/msan/msan_report.cc
+++ b/compiler-rt/lib/msan/msan_report.cc
@@ -36,8 +36,7 @@
 
 static void DescribeOrigin(u32 origin) {
   Decorator d;
-  if (common_flags()->verbosity)
-    Printf("  raw origin id: %d\n", origin);
+  VPrintf(1, "  raw origin id: %d\n", origin);
   uptr pc;
   if (const char *so = GetOriginDescrIfStack(origin, &pc)) {
     char* s = internal_strdup(so);