Even without --trace-gc dump the last few GC messages on OOM

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index 9fe3759c5edaa3b9ca22984e4aedd208ac6dbc36..457a64f1245369bc20643669d3a7c25eef0f7a53 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -213,6 +213,10 @@ void i::FatalProcessOutOfMemory(const char* location) {
 // When V8 cannot allocated memory FatalProcessOutOfMemory is called.
 // The default fatal error handler is called and execution is stopped.
 void i::V8::FatalProcessOutOfMemory(const char* location, bool take_snapshot) {
+  i::Isolate* isolate = i::Isolate::Current();
+  char last_few_messages[Heap::kTraceRingBufferSize + 1];
+  memset(last_few_messages, 0, Heap::kTraceRingBufferSize + 1);
+
   i::HeapStats heap_stats;
   int start_marker;
   heap_stats.start_marker = &start_marker;
@@ -254,13 +258,17 @@ void i::V8::FatalProcessOutOfMemory(const char* location, bool take_snapshot) {
   heap_stats.size_per_type = size_per_type;
   int os_error;
   heap_stats.os_error = &os_error;
+  heap_stats.last_few_messages = last_few_messages;
   int end_marker;
   heap_stats.end_marker = &end_marker;
-  i::Isolate* isolate = i::Isolate::Current();
   if (isolate->heap()->HasBeenSetUp()) {
     // BUG(1718): Don't use the take_snapshot since we don't support
     // HeapIterator here without doing a special GC.
     isolate->heap()->RecordStats(&heap_stats, false);
+    char* first_newline = strchr(last_few_messages, '\n');
+    if (first_newline == NULL || first_newline[1] == '\0')
+      first_newline = last_few_messages;
+    PrintF("\n<--- Last few GCs --->\n%s\n", first_newline);
   }
   Utils::ApiCheck(false, location, "Allocation failed - process out of memory");
   // If the fatal error handler returns, we stop execution.