Remove Iceland.

ART_USE_LLVM_COMPILER is removed and when necessary ART_USE_PORTABLE_COMPILER
is used in #ifdefs.

Change-Id: Iffa9ce5b0246c7c427ccc4e67ecc134624632e55
diff --git a/src/oat_file.h b/src/oat_file.h
index bff48fa..8efdf9f 100644
--- a/src/oat_file.h
+++ b/src/oat_file.h
@@ -114,7 +114,7 @@
     mirror::AbstractMethod::InvokeStub* GetInvokeStub() const;
     uint32_t GetInvokeStubSize() const;
 
-#if defined(ART_USE_LLVM_COMPILER)
+#if defined(ART_USE_PORTABLE_COMPILER)
     const void* GetProxyStub() const;
 #endif
 
@@ -130,7 +130,7 @@
               const uint32_t vmap_table_offset,
               const uint32_t gc_map_offset,
               const uint32_t invoke_stub_offset
-#if defined(ART_USE_LLVM_COMPILER)
+#if defined(ART_USE_PORTABLE_COMPILER)
             , const uint32_t proxy_stub_offset
 #endif
               );
@@ -155,7 +155,7 @@
     uint32_t native_gc_map_offset_;
     uint32_t invoke_stub_offset_;
 
-#if defined(ART_USE_LLVM_COMPILER)
+#if defined(ART_USE_PORTABLE_COMPILER)
     uint32_t proxy_stub_offset_;
 #endif