Extract method-related information from CompilationUnit.

Extract method-related information, such as class_loader,
class_linker, dex_file, dex_cache, code_item, method_idx,
and access_flags from art::CompilationUnit, so that we
can use them in 2 different code generators.

Change-Id: I20631cc73b6f01e9646a983156f3fcb066d732db
diff --git a/src/oat_compilation_unit.h b/src/oat_compilation_unit.h
new file mode 100644
index 0000000..9d1463e
--- /dev/null
+++ b/src/oat_compilation_unit.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_SRC_METHOD_UNIT_H_
+#define ART_SRC_METHOD_UNIT_H_
+
+#include <stdint.h>
+
+namespace art {
+
+class ClassLoader;
+class ClassLinker;
+class DexFile;
+class DexCache;
+
+class OatCompilationUnit {
+ public:
+  OatCompilationUnit(ClassLoader const* class_loader, ClassLinker* class_linker,
+                     DexFile const& dex_file, DexCache& dex_cache,
+                     DexFile::CodeItem const* code_item,
+                     uint32_t method_idx, uint32_t access_flags)
+      : class_loader_(class_loader), class_linker_(class_linker),
+        dex_file_(&dex_file), dex_cache_(&dex_cache), code_item_(code_item),
+        method_idx_(method_idx), access_flags_(access_flags) {
+  }
+
+ public:
+  ClassLoader const* class_loader_;
+  ClassLinker* class_linker_;
+
+  DexFile const* dex_file_;
+  DexCache* dex_cache_;
+
+  DexFile::CodeItem const* code_item_;
+  uint32_t method_idx_;
+  uint32_t access_flags_;
+};
+
+} // namespace art
+
+#endif // ART_SRC_METHOD_UNIT_H_