Perform full gcs when context disposals happen too frequent.

src/api.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/api.h"
 
 #include <string.h>  // For memcpy, strlen.
 #ifdef V8_USE_ADDRESS_SANITIZER
 #include <sanitizer/asan_interface.h>
 #endif  // V8_USE_ADDRESS_SANITIZER
@@ skipping 6706 matching lines @@
 void v8::Isolate::LowMemoryNotification() {
   i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
   {
     i::HistogramTimerScope idle_notification_scope(
         isolate->counters()->gc_low_memory_notification());
     isolate->heap()->CollectAllAvailableGarbage("low memory notification");
   }
 }
 
 
-int v8::Isolate::ContextDisposedNotification() {
+void v8::Isolate::ContextDisposedNotification() {
   i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
-  return isolate->heap()->NotifyContextDisposed();
+  isolate->heap()->NotifyContextDisposed();
 }
 
 
 String::Utf8Value::Utf8Value(v8::Handle<v8::Value> obj)
     : str_(NULL), length_(0) {
   i::Isolate* isolate = i::Isolate::Current();
   if (obj.IsEmpty()) return;
   ENTER_V8(isolate);
   i::HandleScope scope(isolate);
   TryCatch try_catch;
@@ skipping 883 matching lines @@
   Isolate* isolate = reinterpret_cast<Isolate*>(info.GetIsolate());
   Address callback_address =
       reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, callback_address);
   callback(info);
 }
 
 
 } }  // namespace v8::internal