Remove unused includes of plugin_list.h. Also remove unused ContentClient and webkit_support method…

chrome/browser/plugins/plugin_finder_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 "chrome/browser/plugins/plugin_finder.h"
 
 #include "base/values.h"
 #include "chrome/browser/plugins/plugin_metadata.h"
 #include "testing/gtest/include/gtest/gtest.h"
-#include "webkit/plugins/npapi/plugin_list.h"
 
 using base::DictionaryValue;
 using base::ListValue;
-using webkit::npapi::PluginList;
 
 TEST(PluginFinderTest, JsonSyntax) {
   scoped_ptr<DictionaryValue> plugin_list(
     PluginFinder::LoadBuiltInPluginList());
   ASSERT_TRUE(plugin_list.get());
   base::Value* version = NULL;
   ASSERT_TRUE(plugin_list->Remove("x-version", &version));
   EXPECT_EQ(base::Value::TYPE_INTEGER, version->GetType());
 
   for (DictionaryValue::Iterator plugin_it(*plugin_list);
@@ skipping 40 matching lines @@
       EXPECT_TRUE(version_dict->GetString("version", &dummy_str));
       std::string status_str;
       EXPECT_TRUE(version_dict->GetString("status", &status_str));
       PluginMetadata::SecurityStatus status =
           PluginMetadata::SECURITY_STATUS_UP_TO_DATE;
       EXPECT_TRUE(PluginMetadata::ParseSecurityStatus(status_str, &status))
           << "Invalid security status \"" << status_str << "\"";
     }
   }
 }