scheduler: Implement WebFrameScheduler and WebPageScheduler

content/test/fake_renderer_scheduler.h

Index: content/test/fake_renderer_scheduler.h
diff --git a/content/test/fake_renderer_scheduler.h b/content/test/fake_renderer_scheduler.h
index 7178e25174055ebe33283eafd99b048c4371dfef..4f68d3855be320d1a56fadc251212c545aad8347 100644
--- a/content/test/fake_renderer_scheduler.h
+++ b/content/test/fake_renderer_scheduler.h
@@ -21,6 +21,10 @@ class FakeRendererScheduler : public scheduler::RendererScheduler {
   scoped_refptr<scheduler::SingleThreadIdleTaskRunner> IdleTaskRunner()
       override;
   scoped_refptr<scheduler::TaskQueue> TimerTaskRunner() override;
+  scoped_refptr<scheduler::TaskQueue> NewLoadingTaskRunner(
+      const char* name) override;
+  scoped_refptr<scheduler::TaskQueue> NewTimerTaskRunner(
+      const char* name) override;
   void WillBeginFrame(const cc::BeginFrameArgs& args) override;
   void BeginFrameNotExpectedSoon() override;
   void DidCommitFrameToCompositor() override;