Add the referrer policy to the page state

It's already part of history items, so we should persist it.

BUG=334125
R=marja@chromium.org

Review URL: https://codereview.chromium.org/134813003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@247940 0039d316-1c4b-4281-b951-d872f2087c98

content/common/page_state_serialization.cc

@@ -188,12 +188,13 @@ struct SerializeObject {
 // 15: Removes a bunch of values we defined but never used.
 // 16: Switched from blob urls to blob uuids.
 // 17: Add a target frame id number.
+// 18: Add referrer policy.
 //
 // NOTE: If the version is -1, then the pickle contains only a URL string.
 // See ReadPageState.
 //
 const int kMinVersion = 11;
-const int kCurrentVersion = 17;
+const int kCurrentVersion = 18;
 
 // A bunch of convenience functions to read/write to SerializeObjects.  The
 // de-serializers assume the input data will be in the correct format and fall
@@ -504,6 +505,7 @@ void WriteFrameState(
   WriteInteger64(state.item_sequence_number, obj);
   WriteInteger64(state.document_sequence_number, obj);
   WriteInteger64(state.target_frame_id, obj);
+  WriteInteger(state.referrer_policy, obj);
 
   bool has_state_object = !state.state_object.is_null();
   WriteBoolean(has_state_object, obj);
@@ -556,6 +558,10 @@ void ReadFrameState(SerializeObject* obj, bool is_top,
   state->document_sequence_number = ReadInteger64(obj);
   if (obj->version >= 17)
     state->target_frame_id = ReadInteger64(obj);
+  if (obj->version >= 18) {
+    state->referrer_policy =
+        static_cast<blink::WebReferrerPolicy>(ReadInteger(obj));
+  }
 
   bool has_state_object = ReadBoolean(obj);
   if (has_state_object)
@@ -666,7 +672,8 @@ ExplodedFrameState::ExplodedFrameState()
     : item_sequence_number(0),
       document_sequence_number(0),
       target_frame_id(0),
-      page_scale_factor(0.0) {
+      page_scale_factor(0.0),
+      referrer_policy(blink::WebReferrerPolicyDefault) {
 }
 
 ExplodedFrameState::~ExplodedFrameState() {

content/common/page_state_serialization.h

@@ -10,6 +10,7 @@
 #include "base/strings/nullable_string16.h"
 #include "content/common/content_export.h"
 #include "third_party/WebKit/public/platform/WebHTTPBody.h"
+#include "third_party/WebKit/public/platform/WebReferrerPolicy.h"
 #include "ui/gfx/point.h"
 #include "url/gurl.h"
 
@@ -52,6 +53,7 @@ struct CONTENT_EXPORT ExplodedFrameState {
   int64 document_sequence_number;
   int64 target_frame_id;
   double page_scale_factor;
+  blink::WebReferrerPolicy referrer_policy;
   ExplodedHttpBody http_body;
   std::vector<ExplodedFrameState> children;
 

content/common/page_state_serialization_unittest.cc

@@ -69,6 +69,7 @@ void ExpectEquality(const ExplodedFrameState& a, const ExplodedFrameState& b) {
   EXPECT_EQ(a.url_string, b.url_string);
   EXPECT_EQ(a.original_url_string, b.original_url_string);
   EXPECT_EQ(a.referrer, b.referrer);
+  EXPECT_EQ(a.referrer_policy, b.referrer_policy);
   EXPECT_EQ(a.target, b.target);
   EXPECT_EQ(a.state_object, b.state_object);
   ExpectEquality(a.document_state, b.document_state);
@@ -95,6 +96,7 @@ class PageStateSerializationTest : public testing::Test {
     frame_state->url_string = NS16("http://dev.chromium.org/");
     frame_state->original_url_string = frame_state->url_string;
     frame_state->referrer = NS16("https://www.google.com/search?q=dev.chromium.org");
+    frame_state->referrer_policy = blink::WebReferrerPolicyAlways;
     frame_state->target = NS16("foo");
     frame_state->state_object = NS16(NULL);
     frame_state->document_state.push_back(NS16("1"));
@@ -137,6 +139,7 @@ class PageStateSerializationTest : public testing::Test {
     frame_state->url_string = NS16("http://chromium.org/");
     frame_state->original_url_string = frame_state->url_string;
     frame_state->referrer = NS16("http://google.com/");
+    frame_state->referrer_policy = blink::WebReferrerPolicyDefault;
     if (!is_child)
       frame_state->target = NS16("target");
     frame_state->scroll_offset = gfx::Point(42, -42);

content/public/common/page_state.cc

@@ -46,6 +46,7 @@ void RecursivelyRemoveScrollOffset(ExplodedFrameState* state) {
 
 void RecursivelyRemoveReferrer(ExplodedFrameState* state) {
   state->referrer = base::NullableString16();
+  state->referrer_policy = blink::WebReferrerPolicyDefault;
   for (std::vector<ExplodedFrameState>::iterator it = state->children.begin();
        it != state->children.end();
        ++it) {

content/public/renderer/history_item_serialization.cc

@@ -84,6 +84,7 @@ bool RecursivelyGenerateFrameState(const WebHistoryItem& item,
   state->url_string = item.urlString();
   state->original_url_string = item.originalURLString();
   state->referrer = item.referrer();
+  state->referrer_policy = item.referrerPolicy();
   state->target = item.target();
   if (!item.stateObject().isNull())
     state->state_object = item.stateObject().toString();
@@ -122,7 +123,7 @@ bool RecursivelyGenerateHistoryItem(const ExplodedFrameState& state,
                                     WebHistoryItem* item) {
   item->setURLString(state.url_string);
   item->setOriginalURLString(state.original_url_string);
-  item->setReferrer(state.referrer);
+  item->setReferrer(state.referrer, state.referrer_policy);
   item->setTarget(state.target);
   if (!state.state_object.is_null()) {
     item->setStateObject(