Stop disabling force_compositing_mode for background RenderViews.

content/renderer/render_view_impl_params.cc

Index: content/renderer/render_view_impl_params.cc
diff --git a/content/renderer/render_view_impl_params.cc b/content/renderer/render_view_impl_params.cc
index 54ef8afa921bfa69f98c28f1bb0f8fe4141144cd..6e6d1e25754fa62bb1d040eb7d1a8f8c90865ee5 100644
--- a/content/renderer/render_view_impl_params.cc
+++ b/content/renderer/render_view_impl_params.cc
@@ -18,6 +18,7 @@ RenderViewImplParams::RenderViewImplParams(
     bool is_renderer_created,
     bool swapped_out,
     bool hidden,
+    bool background,
     int32 next_page_id,
     const blink::WebScreenInfo& screen_info,
     AccessibilityMode accessibility_mode)
@@ -32,6 +33,7 @@ RenderViewImplParams::RenderViewImplParams(
       is_renderer_created(is_renderer_created),
       swapped_out(swapped_out),
       hidden(hidden),
+      background(background),
       next_page_id(next_page_id),
       screen_info(screen_info),
       accessibility_mode(accessibility_mode) {}