Revert "Refactor HGraphBuilder and SsaBuilder to remove HLocals"

Bug: 27995065
This reverts commit e3ff7b293be2a6791fe9d135d660c0cffe4bd73f.

Change-Id: I5363c7ce18f47fd422c15eed5423a345a57249d8
diff --git a/compiler/optimizing/code_generator_mips64.h b/compiler/optimizing/code_generator_mips64.h
index 4e15cdd..94767cb 100644
--- a/compiler/optimizing/code_generator_mips64.h
+++ b/compiler/optimizing/code_generator_mips64.h
@@ -286,6 +286,8 @@
 
   void SetupBlockedRegisters() const OVERRIDE;
 
+  Location GetStackLocation(HLoadLocal* load) const OVERRIDE;
+
   size_t SaveCoreRegister(size_t stack_index, uint32_t reg_id);
   size_t RestoreCoreRegister(size_t stack_index, uint32_t reg_id);
   size_t SaveFloatingPointRegister(size_t stack_index, uint32_t reg_id);