Hook up DidReceiveInputEvent to the blink scheduler

content/renderer/scheduler/renderer_scheduler_impl_unittest.cc

Index: content/renderer/scheduler/renderer_scheduler_impl_unittest.cc
diff --git a/content/renderer/scheduler/renderer_scheduler_impl_unittest.cc b/content/renderer/scheduler/renderer_scheduler_impl_unittest.cc
index bbdada99bd8c4cfca2bdddf0ed46a18da33f7bbf..7b8c79f30092119ee6613b370e2ab92a85922e49 100644
--- a/content/renderer/scheduler/renderer_scheduler_impl_unittest.cc
+++ b/content/renderer/scheduler/renderer_scheduler_impl_unittest.cc
@@ -239,7 +239,7 @@ TEST_F(RendererSchedulerImplTest, TestDefaultPolicy) {
                                    std::string("I1")));
 }
 
-TEST_F(RendererSchedulerImplTest, TestCompositorPolicy) {
+TEST_F(RendererSchedulerImplTest, TestCompositorPolicy_DidAnimate) {

[rmcilroy, 2014/11/06 00:53:16]

I don't think we need to add _DidAnimate here.

[alex clarke (OOO till 29th), 2014/11/06 19:21:45]

It kind of is, I didn't intend to delete the original test.

   std::vector<std::string> order;
 
   idle_task_runner_->PostIdleTask(
@@ -258,7 +258,7 @@ TEST_F(RendererSchedulerImplTest, TestCompositorPolicy) {
       FROM_HERE,
       base::Bind(&AppendToVectorTestTask, &order, std::string("C2")));
 
-  scheduler_->DidReceiveInputEvent();
+  scheduler_->DidAnimate();

[rmcilroy, 2014/11/06 00:53:17]

Please keep the DidReceiveInputEvent() compositor mode trigger testing here, and
also add a separate test for DidAnimate (either in the same test function or a
new one).

[alex clarke (OOO till 29th), 2014/11/06 19:21:45]

Done.

   EnableIdleTasks();
   RunUntilIdle();
   EXPECT_THAT(order,