Reduce amount of boilerplate associated with bootstrap libraries.

runtime/vm/object.cc

Index: runtime/vm/object.cc
diff --git a/runtime/vm/object.cc b/runtime/vm/object.cc
index bf063f3ffe159961bc70fc0b7978785fd1a9ef6b..470029d866d629353d718da76e4cbab3beff1092 100644
--- a/runtime/vm/object.cc
+++ b/runtime/vm/object.cc
@@ -1606,7 +1606,7 @@ NOT_IN_PRODUCT(
 
   // Finish the initialization by compiling the bootstrap scripts containing the
   // base interfaces and the implementation of the internal classes.
-  const Error& error = Error::Handle(Bootstrap::LoadandCompileScripts());
+  const Error& error = Error::Handle(Bootstrap::DoBootstrapping());
   if (!error.IsNull()) {
     return error.raw();
   }
@@ -10840,7 +10840,7 @@ RawLibrary* Library::DeveloperLibrary() {
 
 
 RawLibrary* Library::InternalLibrary() {
-  return Isolate::Current()->object_store()->internal_library();
+  return Isolate::Current()->object_store()->_internal_library();
 }
 
 
@@ -10854,9 +10854,11 @@ RawLibrary* Library::MathLibrary() {
 }
 
 
+#if !defined(PRODUCT)
 RawLibrary* Library::MirrorsLibrary() {
   return Isolate::Current()->object_store()->mirrors_library();
 }
+#endif
 
 
 RawLibrary* Library::NativeWrappersLibrary() {
@@ -10875,7 +10877,7 @@ RawLibrary* Library::TypedDataLibrary() {
 
 
 RawLibrary* Library::VMServiceLibrary() {
-  return Isolate::Current()->object_store()->vmservice_library();
+  return Isolate::Current()->object_store()->_vmservice_library();
 }