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diff --git a/chromium/third_party/webrtc/base/gunit.h b/chromium/third_party/webrtc/base/gunit.h
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index 00000000000..6d9c06fef0a
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+++ b/chromium/third_party/webrtc/base/gunit.h
@@ -0,0 +1,88 @@
+/*
+ *  Copyright 2004 The WebRTC 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 in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef WEBRTC_BASE_GUNIT_H_
+#define WEBRTC_BASE_GUNIT_H_
+
+#include "webrtc/base/logging.h"
+#include "webrtc/base/thread.h"
+#if defined(WEBRTC_ANDROID) || defined(GTEST_RELATIVE_PATH)
+#include "gtest/gtest.h"
+#else
+#include "testing/base/public/gunit.h"
+#endif
+
+// Wait until "ex" is true, or "timeout" expires.
+#define WAIT(ex, timeout) \
+  for (uint32 start = rtc::Time(); \
+      !(ex) && rtc::Time() < start + timeout;) \
+    rtc::Thread::Current()->ProcessMessages(1);
+
+// This returns the result of the test in res, so that we don't re-evaluate
+// the expression in the XXXX_WAIT macros below, since that causes problems
+// when the expression is only true the first time you check it.
+#define WAIT_(ex, timeout, res) \
+  do { \
+    uint32 start = rtc::Time(); \
+    res = (ex); \
+    while (!res && rtc::Time() < start + timeout) { \
+      rtc::Thread::Current()->ProcessMessages(1); \
+      res = (ex); \
+    } \
+  } while (0);
+
+// The typical EXPECT_XXXX and ASSERT_XXXXs, but done until true or a timeout.
+#define EXPECT_TRUE_WAIT(ex, timeout) \
+  do { \
+    bool res; \
+    WAIT_(ex, timeout, res); \
+    if (!res) EXPECT_TRUE(ex); \
+  } while (0);
+
+#define EXPECT_EQ_WAIT(v1, v2, timeout) \
+  do { \
+    bool res; \
+    WAIT_(v1 == v2, timeout, res); \
+    if (!res) EXPECT_EQ(v1, v2); \
+  } while (0);
+
+#define ASSERT_TRUE_WAIT(ex, timeout) \
+  do { \
+    bool res; \
+    WAIT_(ex, timeout, res); \
+    if (!res) ASSERT_TRUE(ex); \
+  } while (0);
+
+#define ASSERT_EQ_WAIT(v1, v2, timeout) \
+  do { \
+    bool res; \
+    WAIT_(v1 == v2, timeout, res); \
+    if (!res) ASSERT_EQ(v1, v2); \
+  } while (0);
+
+// Version with a "soft" timeout and a margin. This logs if the timeout is
+// exceeded, but it only fails if the expression still isn't true after the
+// margin time passes.
+#define EXPECT_TRUE_WAIT_MARGIN(ex, timeout, margin) \
+  do { \
+    bool res; \
+    WAIT_(ex, timeout, res); \
+    if (res) { \
+      break; \
+    } \
+    LOG(LS_WARNING) << "Expression " << #ex << " still not true after " << \
+        timeout << "ms; waiting an additional " << margin << "ms"; \
+    WAIT_(ex, margin, res); \
+    if (!res) { \
+      EXPECT_TRUE(ex); \
+    } \
+  } while (0);
+
+#endif  // WEBRTC_BASE_GUNIT_H_