VT: Rename "shared element" to "view transition"

Renaming some instances missed in previous renames.

Change-Id: I18c14df9def3e38014779df3b22692f384c6e434
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4182595
Reviewed-by: Vladimir Levin <vmpstr@chromium.org>
Reviewed-by: Jeremy Roman <jbroman@chromium.org>
Reviewed-by: danakj <danakj@chromium.org>
Commit-Queue: David Bokan <bokan@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1095241}

diff --git a/cc/BUILD.gn b/cc/BUILD.gn
index 18a09f3..a43b848 100644
--- a/cc/BUILD.gn
+++ b/cc/BUILD.gn

@@ -437,10 +437,10 @@
     "trees/viewport_layers.cc",
     "trees/viewport_layers.h",
     "trees/viewport_property_ids.h",
+    "view_transition/view_transition_element_id.cc",
+    "view_transition/view_transition_element_id.h",
     "view_transition/view_transition_request.cc",
     "view_transition/view_transition_request.h",
-    "view_transition/view_transition_shared_element_id.cc",
-    "view_transition/view_transition_shared_element_id.h",
   ]
 
   public_deps = [