Add hints for potential overlay promotion on android.

cc/resources/transferable_resource.cc

Index: cc/resources/transferable_resource.cc
diff --git a/cc/resources/transferable_resource.cc b/cc/resources/transferable_resource.cc
index cf463bf3577955fecee40cbbe1b1567cb5ef8ee0..108cdaa52922898ddfc1939595795b85242fb5fc 100644
--- a/cc/resources/transferable_resource.cc
+++ b/cc/resources/transferable_resource.cc
@@ -13,7 +13,11 @@ TransferableResource::TransferableResource()
       filter(0),
       read_lock_fences_enabled(false),
       is_software(false),
-      is_overlay_candidate(false) {}
+#if defined(OS_ANDROID)
+      is_backed_by_surface_texture(false),
+#endif
+      is_overlay_candidate(false) {
+}
 
 TransferableResource::TransferableResource(const TransferableResource& other) =
     default;