Remove #include "oat_file.h" from class_linker.h .

Refactor the OatClass and OatMethod related functions from
ClassLinker to OatFile and ArtMethod, respectively. Refactor
the remaining ClassLinker dependencies on OatFile to break
the #include dependency and reduce incremental build times.

Test: m test-art-host
Change-Id: Iebc5b9f81b48fbcf79821cc827a5d7c4a0261bf6
diff --git a/compiler/optimizing/optimizing_compiler.cc b/compiler/optimizing/optimizing_compiler.cc
index d3a55dd..99504aa 100644
--- a/compiler/optimizing/optimizing_compiler.cc
+++ b/compiler/optimizing/optimizing_compiler.cc
@@ -867,9 +867,10 @@
     return nullptr;
   }
 
+  ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
   DexCompilationUnit dex_compilation_unit(
       class_loader,
-      Runtime::Current()->GetClassLinker(),
+      class_linker,
       dex_file,
       code_item,
       class_def_idx,
@@ -908,7 +909,7 @@
   if (method != nullptr) {
     graph->SetArtMethod(method);
     ScopedObjectAccess soa(Thread::Current());
-    interpreter_metadata = method->GetQuickenedInfo();
+    interpreter_metadata = method->GetQuickenedInfo(class_linker->GetImagePointerSize());
     uint16_t type_index = method->GetDeclaringClass()->GetDexTypeIndex();
 
     // Update the dex cache if the type is not in it yet. Note that under AOT,