Move blink scheduler implementation into a component

content/renderer/renderer_blink_platform_impl.h

Index: content/renderer/renderer_blink_platform_impl.h
diff --git a/content/renderer/renderer_blink_platform_impl.h b/content/renderer/renderer_blink_platform_impl.h
index da3ec9018a27bf7b6a7b7c5065e830b8e2a6f5f5..aa22649917a2141806665781cc27dbc16bc9e67f 100644
--- a/content/renderer/renderer_blink_platform_impl.h
+++ b/content/renderer/renderer_blink_platform_impl.h
@@ -37,6 +37,10 @@ class WebGraphicsContext3DProvider;
 class WebServiceWorkerCacheStorage;
 }
 
+namespace scheduler {
+class RendererScheduler;
+}
+
 namespace content {
 class BatteryStatusDispatcher;
 class DeviceLightEventPump;
@@ -45,7 +49,6 @@ class DeviceOrientationEventPump;
 class PlatformEventObserverBase;
 class QuotaMessageFilter;
 class RendererClipboardDelegate;
-class RendererScheduler;
 class RenderView;
 class ThreadSafeSender;
 class WebClipboardImpl;
@@ -55,7 +58,8 @@ class WebThreadImplForRendererScheduler;
 
 class CONTENT_EXPORT RendererBlinkPlatformImpl : public BlinkPlatformImpl {
  public:
-  explicit RendererBlinkPlatformImpl(RendererScheduler* renderer_scheduler);
+  explicit RendererBlinkPlatformImpl(
+      scheduler::RendererScheduler* renderer_scheduler);
   virtual ~RendererBlinkPlatformImpl();
 
   void set_plugin_refresh_allowed(bool plugin_refresh_allowed) {