Use kRenderClientId command line flag when starting a render process

content/renderer/render_widget_fullscreen_pepper.h

Index: content/renderer/render_widget_fullscreen_pepper.h
diff --git a/content/renderer/render_widget_fullscreen_pepper.h b/content/renderer/render_widget_fullscreen_pepper.h
index 21ab9aced457ccd01d6882a0ffd1b37ac431da39..7ee0f38dfef239eec0e925b57972d90566aa8100 100644
--- a/content/renderer/render_widget_fullscreen_pepper.h
+++ b/content/renderer/render_widget_fullscreen_pepper.h
@@ -34,7 +34,8 @@ class RenderWidgetFullscreenPepper : public RenderWidgetFullscreen,
       CompositorDependencies* compositor_deps,
       PepperPluginInstanceImpl* plugin,
       const GURL& active_url,
-      const ScreenInfo& screen_info);
+      const ScreenInfo& screen_info,
+      const cc::FrameSinkId& frame_sink_id_);
 
   // pepper::FullscreenContainer API.
   void Invalidate() override;
@@ -59,7 +60,8 @@ class RenderWidgetFullscreenPepper : public RenderWidgetFullscreen,
   RenderWidgetFullscreenPepper(CompositorDependencies* compositor_deps,
                                PepperPluginInstanceImpl* plugin,
                                const GURL& active_url,
-                               const ScreenInfo& screen_info);
+                               const ScreenInfo& screen_info,
+                               const cc::FrameSinkId& frame_sink_id_);
   ~RenderWidgetFullscreenPepper() override;
 
   // RenderWidget API.