Hot reload fixes for isolate tests

- [x] Bump maximum number of vm arguments (fixes a bunch of reload crashes....)
- [x] Only check that an isolate has reload if it was ever runnable.
- [x] Skip some isolate tests that use deferred libraries or are checking for closure identity.

R=rmacnak@google.com

Review URL: https://codereview.chromium.org/2141763002 .

runtime/bin/main.cc

@@ -1624,7 +1624,7 @@ static Dart_GetVMServiceAssetsArchive GetVMServiceAssetsArchiveCallback = NULL;
 
 void main(int argc, char** argv) {
   char* script_name;
-  const int EXTRA_VM_ARGUMENTS = 2;
+  const int EXTRA_VM_ARGUMENTS = 8;
   CommandLineOptions vm_options(argc + EXTRA_VM_ARGUMENTS);
   CommandLineOptions dart_options(argc);
   bool print_flags_seen = false;

runtime/vm/isolate.cc

@@ -1718,7 +1718,7 @@ void Isolate::Shutdown() {
     }
   }
 
-  if (FLAG_check_reloaded &&
+  if (FLAG_check_reloaded && is_runnable() &&
       (this != Dart::vm_isolate()) &&
       !ServiceIsolate::IsServiceIsolateDescendant(this)) {
     if (!HasAttemptedReload()) {

tests/isolate/isolate.status

@@ -207,3 +207,9 @@ issue_24243_parent_isolate_test: Skip # Requires checked mode
 
 [ $compiler == precompiler && $runtime == dart_precompiled && $system == android ]
 *: Skip # Issue #26373
+
+[ $hot_reload ]
+deferred_in_isolate_test: SkipByDesign # Requires deferred libraries
+deferred_in_isolate2_test: SkipByDesign # Requires deferred libraries
+function_send_test: SkipByDesign # Closure identity
+issue_21398_parent_isolate2_test: SkipByDesign # Requires deferred libraries

tests/lib/lib.status

@@ -377,7 +377,6 @@ convert/utf85_test: Pass, Timeout
 mirrors/accessor_cache_overflow_test: Skip
 
 [ $hot_reload ]
-convert/chunked_conversion_utf88_test: Pass, Timeout
-convert/streamed_conversion_json_utf8_decode_test: Fail, Crash
 async/multiple_timer_test: Pass, Fail # Timing related
+async/stream_transformer_test: SkipByDesign # Closure identity
 mirrors/*: Skip # Issue 26836