Introduce IKG into kernel-service to support incremental compilation.

runtime/tests/vm/vm.status

Index: runtime/tests/vm/vm.status
diff --git a/runtime/tests/vm/vm.status b/runtime/tests/vm/vm.status
index 2739d39f07e71282f0979ca098a64700bd03283d..ed187a8ff01fc667bad1ead27ba8c4c2c5707224 100644
--- a/runtime/tests/vm/vm.status
+++ b/runtime/tests/vm/vm.status
@@ -249,6 +249,11 @@ dart/redirection_type_shuffling_test/none: RuntimeError # Issue 29201
 dart/regress29620_test: RuntimeError
 dart/spawn_shutdown_test: SkipSlow
 
+[ ($compiler != dartk) ]
+cc/IsolateReload_KernelIncrementalCompile: Skip
+cc/IsolateReload_KernelIncrementalCompileAppAndLib: Skip
+cc/IsolateReload_KernelIncrementalCompileGenerics: Skip
+
 [ ($compiler == dartk) && ($runtime == vm) ]
 cc/CanonicalizationInScriptSnapshots: Fail
 cc/Class_ComputeEndTokenPos: Crash
@@ -300,6 +305,7 @@ cc/IsolateReload_EnumToNotEnum: Skip
 cc/IsolateReload_ExportedLibModified: Crash
 cc/IsolateReload_ImportedLibModified: Crash
 cc/IsolateReload_ImportedMixinFunction: Crash
+cc/IsolateReload_KernelIncrementalCompileGenerics: Crash # Issue 30322
 cc/IsolateReload_LibraryHide: Crash
 cc/IsolateReload_LibraryLookup: Fail
 cc/IsolateReload_LibraryShow: Crash
@@ -418,6 +424,7 @@ cc/Debug_BreakpointStubPatching: Fail
 cc/InjectNativeFields1: Crash
 cc/InjectNativeFields3: Crash
 cc/Service_TokenStream: Crash
+cc/IsolateReload_KernelIncrementalCompileAppAndLib: Crash # Issue 30420
 
 [ ($compiler == dartk) && ($runtime == vm) && ($system == macos) ]
 cc/IsolateReload_DanglingGetter_Class: Crash