Revert "Revert "ART: Key-Value Store in Oat header""

This reverts commit 452bee5da9811f62123978e142bd67b385e9ff82.

Heap-allocate a couple of objects in dex2oat to avoid large frame
size.

Includes fixes originally in 100596 and 100605.

Change-Id: Id51a44198c973c91f0a3f87b9d992a5dc110c6f8
diff --git a/compiler/oat_writer.h b/compiler/oat_writer.h
index dbecb95..3d34956 100644
--- a/compiler/oat_writer.h
+++ b/compiler/oat_writer.h
@@ -79,9 +79,9 @@
   OatWriter(const std::vector<const DexFile*>& dex_files,
             uint32_t image_file_location_oat_checksum,
             uintptr_t image_file_location_oat_begin,
-            const std::string& image_file_location,
             const CompilerDriver* compiler,
-            TimingLogger* timings);
+            TimingLogger* timings,
+            SafeMap<std::string, std::string>* key_value_store);
 
   const OatHeader& GetOatHeader() const {
     return *oat_header_;
@@ -253,9 +253,9 @@
   // dependencies on the image.
   uint32_t image_file_location_oat_checksum_;
   uintptr_t image_file_location_oat_begin_;
-  std::string image_file_location_;
 
   // data to write
+  SafeMap<std::string, std::string>* key_value_store_;
   OatHeader* oat_header_;
   std::vector<OatDexFile*> oat_dex_files_;
   std::vector<OatClass*> oat_classes_;
@@ -274,7 +274,7 @@
   uint32_t size_dex_file_alignment_;
   uint32_t size_executable_offset_alignment_;
   uint32_t size_oat_header_;
-  uint32_t size_oat_header_image_file_location_;
+  uint32_t size_oat_header_key_value_store_;
   uint32_t size_dex_file_;
   uint32_t size_interpreter_to_interpreter_bridge_;
   uint32_t size_interpreter_to_compiled_code_bridge_;