Mozart: Add hit testing interfaces.

mojo/services/gfx/composition/cpp/formatting.h

 // Copyright 2015 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.
 
 #ifndef MOJO_SERVICES_GFX_COMPOSITION_CPP_FORMATTING_H_
 #define MOJO_SERVICES_GFX_COMPOSITION_CPP_FORMATTING_H_
 
 #include "mojo/public/cpp/bindings/formatting.h"
 #include "mojo/services/geometry/cpp/formatting.h"
 #include "mojo/services/gfx/composition/interfaces/compositor.mojom.h"
@@ skipping 39 matching lines @@
 
 std::ostream& operator<<(std::ostream& os,
                          const mojo::gfx::composition::Color& value);
 
 std::ostream& operator<<(std::ostream& os,
                          const mojo::gfx::composition::Blend& value);
 
 std::ostream& operator<<(std::ostream& os,
                          const mojo::gfx::composition::FrameInfo& value);
 
+std::ostream& operator<<(std::ostream& os,
+                         const mojo::gfx::composition::HitTestBehavior& value);
+std::ostream& operator<<(
+    std::ostream& os,
+    const mojo::gfx::composition::HitTestBehavior::Visibility* value);
+std::ostream& operator<<(std::ostream& os,
+                         const mojo::gfx::composition::HitTestResult& value);
+std::ostream& operator<<(std::ostream& os,
+                         const mojo::gfx::composition::SceneHit& value);
+std::ostream& operator<<(std::ostream& os,
+                         const mojo::gfx::composition::NodeHit& value);
+
 }  // namespace composition
 }  // namespace gfx
 }  // namespace mojo
 
 #endif  // MOJO_SERVICES_GFX_COMPOSITION_CPP_FORMATTING_H_