Replace blink::WebTreeScopeType with a mojo enum

This is another preparation CL for migrating
FrameHostMsg_CreateChildFrame to mojo.

[email protected]

BUG=1064336
[email protected], [email protected]

Change-Id: Ie07faff3f908171c387b4bffd351a01fdccbe38f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2171726
Commit-Queue: Antonio Gomes <[email protected]>
Reviewed-by: Avi Drissman <[email protected]>
Reviewed-by: Dave Tapuska <[email protected]>
Reviewed-by: Dominick Ng <[email protected]>
Cr-Commit-Position: refs/heads/master@{#764410}
diff --git a/content/browser/frame_host/frame_tree.cc b/content/browser/frame_host/frame_tree.cc
index 3274c41..44270696 100644
--- a/content/browser/frame_host/frame_tree.cc
+++ b/content/browser/frame_host/frame_tree.cc
@@ -106,7 +106,7 @@
                               nullptr,
                               // The top-level frame must always be in a
                               // document scope.
-                              blink::WebTreeScopeType::kDocument,
+                              blink::mojom::TreeScopeType::kDocument,
                               std::string(),
                               std::string(),
                               false,
@@ -181,7 +181,7 @@
         interface_provider_receiver,
     mojo::PendingReceiver<blink::mojom::BrowserInterfaceBroker>
         browser_interface_broker_receiver,
-    blink::WebTreeScopeType scope,
+    blink::mojom::TreeScopeType scope,
     const std::string& frame_name,
     const std::string& frame_unique_name,
     bool is_created_by_script,