We do not pass enums by conts references. This CL fixes style errors introduced

content/browser/renderer_host/render_view_host_unittest.cc

 // 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 "base/utf_string_conversions.h"
 #include "content/browser/child_process_security_policy_impl.h"
 #include "content/browser/renderer_host/test_render_view_host.h"
 #include "content/browser/web_contents/navigation_controller_impl.h"
 #include "content/browser/web_contents/test_web_contents.h"
 #include "content/common/view_messages.h"
@@ skipping 66 matching lines @@
   rvh()->AllowBindings(content::BINDINGS_POLICY_WEB_UI);
   EXPECT_FALSE(rvh()->GetEnabledBindings() & content::BINDINGS_POLICY_WEB_UI);
 }
 
 class MockDraggingRenderViewHostDelegateView
     : public content::RenderViewHostDelegateView {
  public:
   virtual ~MockDraggingRenderViewHostDelegateView() {}
   virtual void ShowContextMenu(
       const content::ContextMenuParams& params,
-      const content::ContextMenuSourceType& type) OVERRIDE {}
+      content::ContextMenuSourceType type) OVERRIDE {}
   virtual void ShowPopupMenu(const gfx::Rect& bounds,
                              int item_height,
                              double item_font_size,
                              int selected_item,
                              const std::vector<WebMenuItem>& items,
                              bool right_aligned,
                              bool allow_multiple_selection) OVERRIDE {}
   virtual void StartDragging(const WebDropData& drop_data,
                              WebKit::WebDragOperationsMask allowed_ops,
                              const gfx::ImageSkia& image,
@@ skipping 119 matching lines @@
   // the code actually expects it to have at least one int para, this this
   // bogus message will not fail at de-serialization but should fail in
   // OnMsgInputEventAck() processing.
   IPC::Message message(0, ViewHostMsg_HandleInputEvent_ACK::ID,
                        IPC::Message::PRIORITY_NORMAL);
   test_rvh()->OnMessageReceived(message);
   EXPECT_EQ(1, process()->bad_msg_count());
 }
 
 #endif