Remove BrowserPlugin tests (only one test remaining with existing coverage)

content/renderer/browser_plugin/browser_plugin.h

 // Copyright 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.
 
 #ifndef  CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_H_
 #define  CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_H_
 
 #include "third_party/WebKit/public/web/WebPlugin.h"
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 119 matching lines @@
 
   // MouseLockDispatcher::LockTarget implementation.
   virtual void OnLockMouseACK(bool succeeded) OVERRIDE;
   virtual void OnMouseLockLost() OVERRIDE;
   virtual bool HandleMouseLockedInputEvent(
           const blink::WebMouseEvent& event) OVERRIDE;
 
  private:
   friend class base::DeleteHelper<BrowserPlugin>;
   // Only the manager is allowed to create a BrowserPlugin.
-  friend class BrowserPluginManagerImpl;
-  friend class MockBrowserPluginManager;
+  friend class BrowserPluginManager;
 
   // For unit/integration tests.
   friend class MockBrowserPlugin;
 
   // A BrowserPlugin object is a controller that represents an instance of a
   // browser plugin within the embedder renderer process. Once a BrowserPlugin
   // does an initial navigation or is attached to a newly created guest, it
   // acquires a browser_plugin_instance_id as well. The guest instance ID
   // uniquely identifies a guest WebContents that's hosted by this
   // BrowserPlugin.
@@ skipping 77 matching lines @@
   // Weak factory used in v8 |MakeWeak| callback, since the v8 callback might
   // get called after BrowserPlugin has been destroyed.
   base::WeakPtrFactory<BrowserPlugin> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserPlugin);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_H_