GN Build fixes for Flutter + gen_snapshot fix

runtime/vm/BUILD.gn

Index: runtime/vm/BUILD.gn
diff --git a/runtime/vm/BUILD.gn b/runtime/vm/BUILD.gn
index b19dfc86768bf40682a78ccea66e51dabce219ef..4a76e11dba359b6954440d44bc98c021e04147d2 100644
--- a/runtime/vm/BUILD.gn
+++ b/runtime/vm/BUILD.gn
@@ -61,23 +61,6 @@ static_library("libdart_vm") {
 }
 
 
-static_library("libdart_vm_precompiled_runtime") {
-  configs += ["..:dart_config_no_precompiler"]
-  public_configs = [":libdart_vm_config"]
-  defines = ["DART_PRECOMPILED_RUNTIME"]
-  vm_sources_list = exec_script("../../tools/gypi_to_gn.py",
-                                [rebase_path("vm_sources.gypi")],
-                                "scope",
-                                ["vm_sources.gypi"])
-
-  set_sources_assignment_filter(["*_test.cc", "*_test.h"])
-  sources = vm_sources_list.sources
-  include_dirs = [
-    "..",
-  ]
-}
-
-
 static_library("libdart_vm_nosnapshot") {
   configs += ["..:dart_config"]
   public_configs = [":libdart_vm_config"]
@@ -199,14 +182,6 @@ template("generate_core_libraries") {
       "..",
     ]
   }
-  static_library("libdart_lib_precompiled_runtime") {
-    configs += ["..:dart_config_no_precompiler"]
-    defines = ["DART_PRECOMPILED_RUNTIME"]
-    sources = libsources + [ "bootstrap_nocore.cc", ]
-    include_dirs = [
-      "..",
-    ]
-  }
 }