Revert "Merge of source position information from kernel-sdk."

runtime/vm/bootstrap.cc

Index: runtime/vm/bootstrap.cc
diff --git a/runtime/vm/bootstrap.cc b/runtime/vm/bootstrap.cc
index a354ddc4472b525306725e2df79920efb1b20054..5b4c20f115c842f28b9122eb89f1fc0f1c9aa67d 100644
--- a/runtime/vm/bootstrap.cc
+++ b/runtime/vm/bootstrap.cc
@@ -321,8 +321,8 @@ static RawError* BootstrapFromKernel(Thread* thread,
                                      const uint8_t* buffer,
                                      intptr_t buffer_size) {
   Zone* zone = thread->zone();
-  kernel::KernelReader reader(buffer, buffer_size, true);
-  kernel::Program* program = reader.ReadPrecompiledProgram();
+  kernel::Program* program =
+      ReadPrecompiledKernelFromBuffer(buffer, buffer_size);
   if (program == NULL) {
     const String& message =
         String::Handle(zone, String::New("Failed to read Kernel file"));
@@ -343,6 +343,7 @@ static RawError* BootstrapFromKernel(Thread* thread,
   Library& library = Library::Handle(zone);
   String& dart_name = String::Handle(zone);
   String& kernel_name = String::Handle(zone);
+  kernel::KernelReader reader(NULL, -1, true);
   for (intptr_t i = 0; i < kBootstrapLibraryCount; ++i) {
     ObjectStore::BootstrapLibraryId id = bootstrap_libraries[i].index;
     library = isolate->object_store()->bootstrap_library(id);