Remove calls to deprecated MessageLoop methods in content.

content/browser/loader/resource_dispatcher_host_unittest.cc

Index: content/browser/loader/resource_dispatcher_host_unittest.cc
diff --git a/content/browser/loader/resource_dispatcher_host_unittest.cc b/content/browser/loader/resource_dispatcher_host_unittest.cc
index 629afb9e59db72f8d4639bef079653844a29581b..492cbb42d93ec4e2d502d26903d9f17fe54217c1 100644
--- a/content/browser/loader/resource_dispatcher_host_unittest.cc
+++ b/content/browser/loader/resource_dispatcher_host_unittest.cc
@@ -1565,7 +1565,7 @@ TEST_P(ResourceDispatcherHostTest, DetachedResourceTimesOut) {
   base::OneShotTimer timer;
   timer.Start(FROM_HERE, base::TimeDelta::FromMilliseconds(210),
               base::MessageLoop::current(), &base::MessageLoop::QuitWhenIdle);

[ncarter (slow), 2016/06/22 20:51:09]

It seems inconsistent to update the Run() semantics here, without updating this
usage too (I'm assuming this should be made to use the converted to the
RunLoop's QuitWhenIdle).

What's the plan for this?

-  base::MessageLoop::current()->Run();
+  base::RunLoop().Run();
 
   // The prefetch should be cancelled by now.
   EXPECT_EQ(0, host_.pending_requests());
@@ -2017,7 +2017,7 @@ TEST_P(ResourceDispatcherHostTest, TestProcessCancelDetachedTimesOut) {
   base::OneShotTimer timer;
   timer.Start(FROM_HERE, base::TimeDelta::FromMilliseconds(210),
               base::MessageLoop::current(), &base::MessageLoop::QuitWhenIdle);

[ncarter (slow), 2016/06/22 20:51:09]

Ditto

-  base::MessageLoop::current()->Run();
+  base::RunLoop().Run();
 
   // The prefetch should be cancelled by now.
   EXPECT_EQ(0, host_.pending_requests());