base: Remove the string logging from CHECK().

components/sync/engine_impl/get_commit_ids.cc

Index: components/sync/engine_impl/get_commit_ids.cc
diff --git a/components/sync/engine_impl/get_commit_ids.cc b/components/sync/engine_impl/get_commit_ids.cc
index 0baa11efe67b9950d2d9540165559b1cd7a5b959..4207a2637e5e4c92b1a26582249ef9d7e94ca521 100644
--- a/components/sync/engine_impl/get_commit_ids.cc
+++ b/components/sync/engine_impl/get_commit_ids.cc
@@ -150,7 +150,8 @@ bool MayEntryCommit(ModelTypeSet requested_types,
   // Extra validity checks.
   syncable::Id id = entry.GetId();
   if (id == entry.GetParentId()) {
-    CHECK(id.IsRoot()) << "Non-root item is self parenting." << entry;
+    // Non-root item is self parenting.|entry|.
+    CHECK(id.IsRoot());
     // If the root becomes unsynced it can cause us problems.
     NOTREACHED() << "Root item became unsynced " << entry;
     return false;
@@ -191,7 +192,8 @@ void ExcludeDeletedAncestors(
 
     while (!parent_id.IsRoot()) {
       syncable::Entry parent(trans, syncable::GET_BY_ID, parent_id);
-      CHECK(parent.good()) << "Bad user-only parent in item path.";
+      // Bad user-only parent in item path.
+      CHECK(parent.good());
       int64_t handle = parent.GetMetahandle();
 
       if (!parent.GetIsDel())
@@ -366,7 +368,8 @@ void Traversal::AddUncommittedParents(
   // Climb the tree adding entries leaf -> root.
   while (!parent_id.ServerKnows()) {
     syncable::Entry parent(trans_, syncable::GET_BY_ID, parent_id);
-    CHECK(parent.good()) << "Bad user-only parent in item path.";
+    // Bad user-only parent in item path.
+    CHECK(parent.good());
     int64_t handle = parent.GetMetahandle();
     if (HaveItem(handle)) {
       // We've already added this parent (and therefore all of its parents).