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

chrome/common/chrome_content_client_ios.mm

 // 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.
 
 #include "chrome/common/chrome_content_client.h"
 
 #include "base/logging.h"
 #include "base/strings/string_piece.h"
 #include "chrome/common/chrome_version_info.h"
 #include "chrome/common/url_constants.h"
@@ skipping 13 matching lines @@
 
 void ChromeContentClient::SetGpuInfo(const gpu::GPUInfo& gpu_info) {
   NOTIMPLEMENTED();
 }
 
 void ChromeContentClient::AddPepperPlugins(
     std::vector<content::PepperPluginInfo>* plugins) {
   NOTREACHED();
 }
 
-void ChromeContentClient::AddNPAPIPlugins(
-    webkit::npapi::PluginList* plugin_list) {
-  NOTREACHED();
-}
-
 void ChromeContentClient::AddAdditionalSchemes(
     std::vector<std::string>* standard_schemes,
     std::vector<std::string>* saveable_shemes) {
   // No additional schemes for iOS.
 }
 
 bool ChromeContentClient::CanHandleWhileSwappedOut(
     const IPC::Message& msg) {
   NOTIMPLEMENTED();
   return false;
@@ skipping 30 matching lines @@
 gfx::Image& ChromeContentClient::GetNativeImageNamed(int resource_id) const {
   return ResourceBundle::GetSharedInstance().GetNativeImageNamed(resource_id);
 }
 
 std::string ChromeContentClient::GetProcessTypeNameInEnglish(int type) {
   DCHECK(false) << "Unknown child process type!";
   return "Unknown"; 
 }
 
 }  // namespace chrome