Add an abstraction over a compiled code.

That's just step 1, moving code-related functions of ArtMethod to
another class. That class is only a wrapper on an ArtMethod, but will
be changed to be a wrapper around compiled code.

Change-Id: I6f35fc06d37220558dff61691e51ae20066b0dd6
diff --git a/runtime/exception_test.cc b/runtime/exception_test.cc
index 9f84bd2..da1d80e 100644
--- a/runtime/exception_test.cc
+++ b/runtime/exception_test.cc
@@ -169,7 +169,7 @@
   r->SetInstructionSet(kRuntimeISA);
   ArtMethod* save_method = r->CreateCalleeSaveMethod();
   r->SetCalleeSaveMethod(save_method, Runtime::kSaveAll);
-  QuickMethodFrameInfo frame_info = save_method->GetQuickFrameInfo();
+  QuickMethodFrameInfo frame_info = ArtCode(save_method).GetQuickFrameInfo();
 
   ASSERT_EQ(kStackAlignment, 16U);
   // ASSERT_EQ(sizeof(uintptr_t), sizeof(uint32_t));
@@ -187,14 +187,14 @@
   }
 
   fake_stack.push_back(
-      method_g_->ToNativeQuickPc(dex_pc, /* is_catch_handler */ false));  // return pc
+      ArtCode(method_g_).ToNativeQuickPc(dex_pc, /* is_catch_handler */ false));  // return pc
 
   // Create/push fake 16byte stack frame for method g
   fake_stack.push_back(reinterpret_cast<uintptr_t>(method_g_));
   fake_stack.push_back(0);
   fake_stack.push_back(0);
   fake_stack.push_back(
-      method_g_->ToNativeQuickPc(dex_pc, /* is_catch_handler */ false));  // return pc
+      ArtCode(method_g_).ToNativeQuickPc(dex_pc, /* is_catch_handler */ false));  // return pc
 
   // Create/push fake 16byte stack frame for method f
   fake_stack.push_back(reinterpret_cast<uintptr_t>(method_f_));