Removing unused PreviewsDataSavings

components/previews/core/BUILD.gn

Index: components/previews/core/BUILD.gn
diff --git a/components/previews/core/BUILD.gn b/components/previews/core/BUILD.gn
index 92ae912fb4feb2b366b0b8d8d32375872a74f1b6..e2f014cac8fffedd17f5fb69180430e5ca1c1e90 100644
--- a/components/previews/core/BUILD.gn
+++ b/components/previews/core/BUILD.gn
@@ -8,8 +8,6 @@ static_library("core") {
     "previews_black_list.h",
     "previews_black_list_item.cc",
     "previews_black_list_item.h",
-    "previews_data_savings.cc",
-    "previews_data_savings.h",
     "previews_decider.h",
     "previews_experiments.cc",
     "previews_experiments.h",
@@ -24,7 +22,6 @@ static_library("core") {
 
   deps = [
     "//base",
-    "//components/data_reduction_proxy/core/common",
     "//components/variations",
     "//net:net",
     "//sql",
@@ -37,7 +34,6 @@ source_set("unit_tests") {
   sources = [
     "previews_black_list_item_unittest.cc",
     "previews_black_list_unittest.cc",
-    "previews_data_savings_unittest.cc",
     "previews_experiments_unittest.cc",
     "previews_io_data_unittest.cc",
     "previews_opt_out_store_sql_unittest.cc",
@@ -48,7 +44,6 @@ source_set("unit_tests") {
     ":core",
     "//base",
     "//base/test:test_support",
-    "//components/data_reduction_proxy/core/common",
     "//components/variations",
     "//net:net",
     "//net:test_support",