Download Service : Added leveldb proto layer

components/download/internal/BUILD.gn

Index: components/download/internal/BUILD.gn
diff --git a/components/download/internal/BUILD.gn b/components/download/internal/BUILD.gn
index 7e35171d0ce03e25f56a00d1e66f2fb9cf6811d6..4760e4ef20aa190d7065f438cebe35fd3f715764 100644
--- a/components/download/internal/BUILD.gn
+++ b/components/download/internal/BUILD.gn
@@ -19,13 +19,15 @@ static_library("internal") {
     "config.h",
     "download_service_impl.cc",
     "download_service_impl.h",
+    "download_store.cc",
+    "download_store.h",
     "entry.cc",
     "entry.h",
     "model.h",
     "model_impl.cc",
     "model_impl.h",
-    "noop_store.cc",
-    "noop_store.h",
+    "proto_conversions.cc",
+    "proto_conversions.h",
     "scheduler/battery_listener.cc",
     "scheduler/battery_listener.h",
     "scheduler/network_listener.cc",
@@ -35,7 +37,9 @@ static_library("internal") {
 
   deps = [
     "//base",
+    "//components/download/internal/proto",
     "//components/download/public",
+    "//components/leveldb_proto",
     "//net",
   ]
 }
@@ -46,7 +50,9 @@ source_set("unit_tests") {
   visibility = [ "//components/download:unit_tests" ]
 
   sources = [
+    "download_store_unittest.cc",
     "model_impl_unittest.cc",
+    "proto_conversions_unittest.cc",
     "scheduler/battery_listener_unittest.cc",
     "scheduler/network_listener_unittest.cc",
   ]
@@ -55,6 +61,7 @@ source_set("unit_tests") {
     ":internal",
     "//base/test:test_support",
     "//components/download/internal/test:test_support",
+    "//components/leveldb_proto:test_support",
     "//testing/gmock",
     "//testing/gtest",
   ]