Make PopSirt inlinable, pass self to SirtRef.

Change-Id: Ieb91526b1cb1f8644ceb3c5b99649f658f43bbc1
diff --git a/src/class_linker.h b/src/class_linker.h
index d75e1b2..b07157a 100644
--- a/src/class_linker.h
+++ b/src/class_linker.h
@@ -30,7 +30,6 @@
 #include "oat_file.h"
 #include "object.h"
 #include "safe_map.h"
-#include "stack_indirect_reference_table.h"
 
 namespace art {
 
@@ -38,12 +37,13 @@
 class ImageSpace;
 class InternTable;
 class ObjectLock;
+template<class T> class SirtRef;
 
 typedef bool (ClassVisitor)(Class* c, void* arg);
 
 class ClassLinker {
  public:
-  // Creates the class linker by boot strapping from dex files.
+  // Creates the class linker by bootstrapping from dex files.
   static ClassLinker* CreateFromCompiler(const std::vector<const DexFile*>& boot_class_path,
                                          InternTable* intern_table)
       SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);