base: Remove the string logging from CHECK().

ui/accessibility/ax_tree.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/accessibility/ax_tree.h"
 
 #include <stddef.h>
 
 #include <set>
 
@@ skipping 57 matching lines @@
 }
 
 AXTree::AXTree()
     : delegate_(NULL), root_(NULL) {
   AXNodeData root;
   root.id = -1;
 
   AXTreeUpdate initial_state;
   initial_state.root_id = -1;
   initial_state.nodes.push_back(root);
-  CHECK(Unserialize(initial_state)) << error();
+  CHECK(Unserialize(initial_state));
 }
 
 AXTree::AXTree(const AXTreeUpdate& initial_state)
     : delegate_(NULL), root_(NULL) {
-  CHECK(Unserialize(initial_state)) << error();
+  CHECK(Unserialize(initial_state));
 }
 
 AXTree::~AXTree() {
   if (root_)
     DestroyNodeAndSubtree(root_, nullptr);
 }
 
 void AXTree::SetDelegate(AXTreeDelegate* delegate) {
   delegate_ = delegate;
 }
@@ skipping 273 matching lines @@
       update_state->pending_nodes.insert(child);
       update_state->new_nodes.insert(child);
     }
     new_children->push_back(child);
   }
 
   return success;
 }
 
 }  // namespace ui