Add stream operator for SurfaceId/FrameSinkId/LocalFrameId.

ash/common/devtools/ash_devtools_unittest.cc

 // Copyright 2016 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 "ash/common/devtools/ash_devtools_dom_agent.h"
 
 #include "ash/common/test/ash_test.h"
 #include "ash/common/wm_lookup.h"
 #include "ash/common/wm_shell.h"
 #include "ash/common/wm_window.h"
+#include "base/strings/stringprintf.h"
 #include "ui/views/widget/widget.h"
 
 namespace ash {
 namespace {
 using namespace ui::devtools::protocol;
 const int kDefaultChildNodeCount = -1;
 
 class TestView : public views::View {
  public:
   TestView(const char* name) : views::View(), name_(name) {}
@@ skipping 281 matching lines @@
   int parent_id = parent_node->getNodeId();
 
   Compare(parent_window, parent_node);
   Compare(child_window, child_node);
   parent_window->StackChildAbove(child_window, target_window);
   ExpectChildNodeRemoved(parent_id, child_node->getNodeId());
   ExpectChildNodeInserted(parent_id, sibling_node->getNodeId());
 }
 
 }  // namespace ash