Remove content/public/plugin and chrome/plugin

chrome/app/chrome_main_delegate.cc

Index: chrome/app/chrome_main_delegate.cc
diff --git a/chrome/app/chrome_main_delegate.cc b/chrome/app/chrome_main_delegate.cc
index e4fa69afd1d1bb9270ed1a9bc6beca0c7797c2a7..d3626f95f445575912282aef6fa8eb0c3c869917 100644
--- a/chrome/app/chrome_main_delegate.cc
+++ b/chrome/app/chrome_main_delegate.cc
@@ -40,7 +40,6 @@
 #include "chrome/common/switch_utils.h"
 #include "chrome/common/trace_event_args_whitelist.h"
 #include "chrome/common/url_constants.h"
-#include "chrome/plugin/chrome_content_plugin_client.h"
 #include "chrome/renderer/chrome_content_renderer_client.h"
 #include "chrome/utility/chrome_content_utility_client.h"
 #include "components/component_updater/component_updater_paths.h"
@@ -145,8 +144,6 @@ base::LazyInstance<ChromeContentRendererClient>
     g_chrome_content_renderer_client = LAZY_INSTANCE_INITIALIZER;
 base::LazyInstance<ChromeContentUtilityClient>
     g_chrome_content_utility_client = LAZY_INSTANCE_INITIALIZER;
-base::LazyInstance<ChromeContentPluginClient>
-    g_chrome_content_plugin_client = LAZY_INSTANCE_INITIALIZER;
 #endif
 
 #if !defined(CHROME_MULTIPLE_DLL_CHILD)
@@ -984,14 +981,6 @@ ChromeMainDelegate::CreateContentBrowserClient() {
 #endif
 }
 
-content::ContentPluginClient* ChromeMainDelegate::CreateContentPluginClient() {
-#if defined(CHROME_MULTIPLE_DLL_BROWSER)
-  return NULL;
-#else
-  return g_chrome_content_plugin_client.Pointer();
-#endif
-}
-
 content::ContentRendererClient*
 ChromeMainDelegate::CreateContentRendererClient() {
 #if defined(CHROME_MULTIPLE_DLL_BROWSER)