Unify background color gutters.

chrome/browser/android/compositor/tab_content_manager.h

Index: chrome/browser/android/compositor/tab_content_manager.h
diff --git a/chrome/browser/android/compositor/tab_content_manager.h b/chrome/browser/android/compositor/tab_content_manager.h
index 13b3655f58813eafb5eb6ac10c85fb984a08a575..70b5372c66881b60546b787985c803697cf58bf6 100644
--- a/chrome/browser/android/compositor/tab_content_manager.h
+++ b/chrome/browser/android/compositor/tab_content_manager.h
@@ -53,9 +53,11 @@ class TabContentManager : public ThumbnailCacheObserver {
   // Get the live layer from the cache.
   scoped_refptr<cc::Layer> GetLiveLayer(int tab_id);
 
+  scoped_refptr<ThumbnailLayer> GetStaticLayer(int tab_id);
+
   // Get the static thumbnail from the cache, or the NTP.
-  scoped_refptr<ThumbnailLayer> GetStaticLayer(int tab_id,
-                                               bool force_disk_read);
+  scoped_refptr<ThumbnailLayer> GetOrCreateStaticLayer(int tab_id,
+                                                       bool force_disk_read);
 
   // Should be called when a tab gets a new live layer that should be served
   // by the cache to the CompositorView.