Replicate whether a frame is in a document or shadow tree.

content/common/frame_replication_state.cc

Index: content/common/frame_replication_state.cc
diff --git a/content/common/frame_replication_state.cc b/content/common/frame_replication_state.cc
index 1c1530ca89d3e96dae332470b2f576f4795df140..c78a15ea159e247854c8480dfbd47caf1c0b204b 100644
--- a/content/common/frame_replication_state.cc
+++ b/content/common/frame_replication_state.cc
@@ -3,16 +3,22 @@
 // found in the LICENSE file.
 
 #include "content/common/frame_replication_state.h"
+#include "third_party/WebKit/public/web/WebTreeScopeType.h"
 
 namespace content {
 
+// TODO(dcheng): I'm not sure it's ever right to not pass a tree scope type
+// here.
 FrameReplicationState::FrameReplicationState()
-    : FrameReplicationState("", SandboxFlags::NONE) {
+    : FrameReplicationState(blink::WebTreeScopeType::Document,
+                            std::string(),
+                            SandboxFlags::NONE) {
 }
 
-FrameReplicationState::FrameReplicationState(const std::string& name,
+FrameReplicationState::FrameReplicationState(blink::WebTreeScopeType scope,
+                                             const std::string& name,
                                              SandboxFlags sandbox_flags)
-    : origin(), sandbox_flags(sandbox_flags), name(name) {
+    : origin(), sandbox_flags(sandbox_flags), name(name), scope(scope) {
 }
 
 FrameReplicationState::~FrameReplicationState() {