[ios] Use SpinRunLoopWithMinDelay in MetaTagsTestCase.

base/test/ios/wait_util.h

Index: base/test/ios/wait_util.h
diff --git a/base/test/ios/wait_util.h b/base/test/ios/wait_util.h
index 01c6fe72bb733c927e06e256986119ab3592e90f..ba5b4f7396dfe832db5b7bc71eaa9470c18940c2 100644
--- a/base/test/ios/wait_util.h
+++ b/base/test/ios/wait_util.h
@@ -39,9 +39,14 @@ void WaitUntilCondition(ConditionBlock condition,
 void WaitUntilCondition(ConditionBlock condition);
 
 // Lets the run loop of the current thread process other messages
-// within the given maximum delay.
+// within the given maximum delay. This method may return before max_delay
+// elapsed.
 void SpinRunLoopWithMaxDelay(TimeDelta max_delay);
 
+// Lets the run loop of the current thread process other messages
+// within the given minimum delay. This method returns after max_delay elapsed.

[rohitrao (ping after 24h), 2016/08/02 15:52:37]

What is "max_delay" in this context?  Should that be min_delay?

[Eugene But (OOO till 7-30), 2016/08/02 15:57:28]

Yes, this should be |min_delay|. Thanks for catching.

+void SpinRunLoopWithMinDelay(TimeDelta min_delay);
+
 }  // namespace ios
 }  // namespace test
 }  // namespace base