Fix classes that have too many virtuals for inline constructors.

components/test_runner/test_runner.cc

Index: components/test_runner/test_runner.cc
diff --git a/components/test_runner/test_runner.cc b/components/test_runner/test_runner.cc
index 2ffbee56bf67b22984b3ecb21694717e2ecca392..8440d25f8e1a743b8f718920e90bb46f75db0e1a 100644
--- a/components/test_runner/test_runner.cc
+++ b/components/test_runner/test_runner.cc
@@ -1623,6 +1623,9 @@ void TestRunner::WorkQueue::ProcessWork() {
     controller_->delegate_->TestFinished();
 }
 
+TestRunner::WorkQueue::WorkQueueTask::WorkQueueTask(WorkQueue* object)
+    : WebMethodTask<WorkQueue>(object) {}
+
 void TestRunner::WorkQueue::WorkQueueTask::RunIfValid() {
   object_->ProcessWork();
 }