1 files changed, 54 insertions, 0 deletions
diff --git a/testing/embedder_test_timer_handling_delegate.h b/testing/embedder_test_timer_handling_delegate.h
new file mode 100644
index 0000000000..d05a134b4e
--- /dev/null
+++ b/testing/embedder_test_timer_handling_delegate.h
@@ -0,0 +1,54 @@
+// Copyright 2015 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef TESTING_EMBEDDER_TEST_TIMER_HANDLING_DELEGATE_H_
+#define TESTING_EMBEDDER_TEST_TIMER_HANDLING_DELEGATE_H_
+
+#include <map>
+#include <utility>
+
+#include "embedder_test.h"
+
+class EmbedderTestTimerHandlingDelegate : public EmbedderTest::Delegate {
+public:
+  int SetTimer(int msecs, TimerCallback fn) override {
+    expiry_to_timer_map_.insert(std::pair<int, Timer>(
+        msecs + imaginary_elapsed_msecs_, Timer(++next_timer_id_, fn)));
+    return next_timer_id_;
+  }
+
+  void KillTimer(int id) override {
+    for (auto iter = expiry_to_timer_map_.begin();
+         iter != expiry_to_timer_map_.end(); ++iter) {
+      if (iter->second.first == id) {
+        expiry_to_timer_map_.erase(iter);
+        break;
+      }
+    }
+  }
+
+  void AdvanceTime(int increment_msecs) {
+    imaginary_elapsed_msecs_ += increment_msecs;
+    while (1) {
+      auto iter = expiry_to_timer_map_.begin();
+      if (iter == expiry_to_timer_map_.end()) {
+        break;
+      }
+      Timer t = iter->second;
+      if (t.first > imaginary_elapsed_msecs_) {
+        break;
+      }
+      expiry_to_timer_map_.erase(iter);
+      t.second(t.first);  // Fire timer.
+    }
+  }
+
+protected:
+  using Timer = std::pair<int, TimerCallback>;  // ID, callback pair.
+  std::multimap<int, Timer> expiry_to_timer_map_;  // Keyed by timeout.
+  int next_timer_id_ = 0;
+  int imaginary_elapsed_msecs_ = 0;
+};
+
+#endif // TESTING_EMBEDDER_TEST_TIMER_HANDLING_DELEGATE_H_