Make some editing/selection functions accessible to c/b/renderer_host/

content/browser/renderer_host/render_widget_host_view_mac_unittest.mm

 // Copyright (c) 2012 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 "content/browser/renderer_host/render_widget_host_view_mac.h"
 
 #include <Cocoa/Cocoa.h>
 
 #include "base/mac/mac_util.h"
 #include "base/mac/scoped_nsautorelease_pool.h"
@@ skipping 99 matching lines @@
       andReturnValue:OCMOCK_VALUE(modifierFlags)] modifierFlags];
   [(NSEvent*)[[event stub]
       andReturnValue:OCMOCK_VALUE(magnification)] magnification];
   return event;
 }
 
 class MockRenderWidgetHostDelegate : public RenderWidgetHostDelegate {
  public:
   MockRenderWidgetHostDelegate() {}
   ~MockRenderWidgetHostDelegate() override {}
+
+ private:
+  void Cut() override {}
+  void Copy() override {}
+  void Paste() override {}
 };
 
 class MockRenderWidgetHostImpl : public RenderWidgetHostImpl {
  public:
   MockRenderWidgetHostImpl(RenderWidgetHostDelegate* delegate,
                            RenderProcessHost* process,
                            int routing_id)
       : RenderWidgetHostImpl(delegate, process, routing_id, false) {
   }
 
@@ skipping 883 matching lines @@
     EXPECT_EQ(1U, process_host_->sink().message_count());
     process_host_->sink().ClearMessages();
   }
 
   // Clean up.
   host->Shutdown();
 }
 
 
 }  // namespace content