Add scroll restoration type to page state

content/common/page_state_serialization_unittest.cc

Index: content/common/page_state_serialization_unittest.cc
diff --git a/content/common/page_state_serialization_unittest.cc b/content/common/page_state_serialization_unittest.cc
index 38f04f82ae616d00bfe35783f5f5e6a5258464a6..f860b215747ababa11d03784da9273ea838cb52d 100644
--- a/content/common/page_state_serialization_unittest.cc
+++ b/content/common/page_state_serialization_unittest.cc
@@ -70,6 +70,7 @@ void ExpectEquality(const ExplodedFrameState& a, const ExplodedFrameState& b) {
   EXPECT_EQ(a.target, b.target);
   EXPECT_EQ(a.state_object, b.state_object);
   ExpectEquality(a.document_state, b.document_state);
+  EXPECT_EQ(a.scroll_restoration_type, b.scroll_restoration_type);
   EXPECT_EQ(a.pinch_viewport_scroll_offset, b.pinch_viewport_scroll_offset);
   EXPECT_EQ(a.scroll_offset, b.scroll_offset);
   EXPECT_EQ(a.item_sequence_number, b.item_sequence_number);
@@ -99,6 +100,8 @@ class PageStateSerializationTest : public testing::Test {
     frame_state->document_state.push_back(NS16("q"));
     frame_state->document_state.push_back(NS16("text"));
     frame_state->document_state.push_back(NS16("dev.chromium.org"));
+    frame_state->scroll_restoration_type =
+        blink::WebHistoryScrollRestorationManual;
     frame_state->pinch_viewport_scroll_offset = gfx::PointF(10, 15);
     frame_state->scroll_offset = gfx::Point(0, 100);
     frame_state->item_sequence_number = 1;
@@ -138,6 +141,8 @@ class PageStateSerializationTest : public testing::Test {
     frame_state->referrer_policy = blink::WebReferrerPolicyDefault;
     if (!is_child)
       frame_state->target = NS16("target");
+    frame_state->scroll_restoration_type =
+        blink::WebHistoryScrollRestorationAuto;
     frame_state->pinch_viewport_scroll_offset = gfx::PointF(-1, -1);
     frame_state->scroll_offset = gfx::Point(42, -42);
     frame_state->item_sequence_number = 123;
@@ -428,5 +433,9 @@ TEST_F(PageStateSerializationTest, BackwardsCompat_v20) {
   TestBackwardsCompat(20);
 }
 
+TEST_F(PageStateSerializationTest, BackwardsCompat_v21) {
+  TestBackwardsCompat(21);
+}
+
 }  // namespace
 }  // namespace content