Refactor snapshots pieces to include a section for loading instructions into the heap of a regular …

runtime/bin/extensions_macos.cc

Index: runtime/bin/extensions_macos.cc
diff --git a/runtime/bin/extensions_macos.cc b/runtime/bin/extensions_macos.cc
index 69d712d1835818f897240bae34dbae21c460f2c2..d994c17bd163aae0dbaf704952d8f343ceb83982 100644
--- a/runtime/bin/extensions_macos.cc
+++ b/runtime/bin/extensions_macos.cc
@@ -11,10 +11,11 @@
 namespace dart {
 namespace bin {
 
-const char* kPrecompiledVMIsolateSymbolName = "kVmIsolateSnapshot";
-const char* kPrecompiledIsolateSymbolName = "kIsolateSnapshot";
-const char* kPrecompiledInstructionsSymbolName = "kInstructionsSnapshot";
-const char* kPrecompiledDataSymbolName = "kDataSnapshot";
+const char* kVmSnapshotDataSymbolName = "kDartVmSnapshotData";
+const char* kVmSnapshotInstructionsSymbolName = "kDartVmSnapshotInstructions";
+const char* kIsolateSnapshotDataSymbolName = "kDartIsolateSnapshotData";
+const char* kIsolateSnapshotInstructionsSymbolName =
+    "kDartIsolateSnapshotInstructions";
 
 void* Extensions::LoadExtensionLibrary(const char* library_file) {
   return dlopen(library_file, RTLD_LAZY);