fix cpp11 compile errors

runtime/vm/raw_object.cc

Index: runtime/vm/raw_object.cc
===================================================================
--- runtime/vm/raw_object.cc	(revision 26375)
+++ runtime/vm/raw_object.cc	(working copy)
@@ -37,15 +37,15 @@
   uword tags = ptr()->tags_;
   intptr_t reserved = ReservedBits::decode(tags);
   if (reserved != 0) {
-    FATAL1("Invalid tags field encountered %#"Px"\n", tags);
+    FATAL1("Invalid tags field encountered %#" Px "\n", tags);
   }
   intptr_t class_id = ClassIdTag::decode(tags);
   if (!isolate->class_table()->IsValidIndex(class_id)) {
-    FATAL1("Invalid class id encountered %"Pd"\n", class_id);
+    FATAL1("Invalid class id encountered %" Pd "\n", class_id);
   }
   intptr_t size = SizeTag::decode(tags);
   if (size != 0 && size != SizeFromClass()) {
-    FATAL1("Inconsistent class size encountered %"Pd"\n", size);
+    FATAL1("Inconsistent class size encountered %" Pd "\n", size);
   }
 }
 
@@ -252,7 +252,7 @@
         break;
       }
       default:
-        OS::Print("Class Id: %"Pd"\n", class_id);
+        OS::Print("Class Id: %" Pd "\n", class_id);
         UNREACHABLE();
         break;
     }