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

content/renderer/browser_plugin/browser_plugin_browsertest.h

-// 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.
-
-#ifndef CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_BROWSERETEST_H_
-#define CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_BROWSERETEST_H_
-
-#include <string>
-
-#include "base/memory/scoped_ptr.h"
-#include "content/common/browser_plugin/browser_plugin_messages.h"
-#include "content/public/test/render_view_test.h"
-#include "content/renderer/browser_plugin/mock_browser_plugin_manager.h"
-#include "content/renderer/render_view_impl.h"
-#include "testing/gtest/include/gtest/gtest.h"
-#include "third_party/WebKit/public/platform/WebSize.h"
-#include "third_party/WebKit/public/web/WebView.h"
-
-class RenderThreadImpl;
-
-namespace content {
-
-class MockBrowserPlugin;
-
-class BrowserPluginTest : public RenderViewTest {
- public:
-  BrowserPluginTest();
-  virtual ~BrowserPluginTest();
-
-  virtual void SetUp() OVERRIDE;
-  virtual void TearDown() OVERRIDE;
-
-  MockBrowserPluginManager* browser_plugin_manager() const {
-    return static_cast<MockBrowserPluginManager*>(
-        static_cast<RenderViewImpl*>(view_)->GetBrowserPluginManager());
-  }
-  std::string ExecuteScriptAndReturnString(const std::string& script);
-  int ExecuteScriptAndReturnInt(const std::string& script);
-  bool ExecuteScriptAndReturnBool(const std::string& script, bool* result);
-  // Returns NULL if there is no plugin.
-  MockBrowserPlugin* GetCurrentPlugin();
-  // Returns NULL if there is no plugin.
-  MockBrowserPlugin* GetCurrentPluginWithAttachParams(
-      BrowserPluginHostMsg_Attach_Params* params);
-};
-
-}  // namespace content
-
-#endif //  CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_BROWSERETEST_H_
-