Split ppapi::PluginList from PepperPluginRegistry so that DRT could load pepper plugins.

content/browser/ppapi_plugin_process_host.cc

Index: content/browser/ppapi_plugin_process_host.cc
===================================================================
--- content/browser/ppapi_plugin_process_host.cc	(revision 101488)
+++ content/browser/ppapi_plugin_process_host.cc	(working copy)
@@ -11,9 +11,9 @@
 #include "content/browser/plugin_service.h"
 #include "content/browser/renderer_host/render_message_filter.h"
 #include "content/common/content_switches.h"
-#include "content/common/pepper_plugin_registry.h"
 #include "ipc/ipc_switches.h"
 #include "ppapi/proxy/ppapi_messages.h"
+#include "webkit/plugins/ppapi/ppapi_plugin_info.h"
 
 PpapiPluginProcessHost::PpapiPluginProcessHost(net::HostResolver* host_resolver)
     : BrowserChildProcessHost(ChildProcessInfo::PPAPI_PLUGIN_PROCESS),
@@ -29,7 +29,7 @@
   CancelRequests();
 }
 
-bool PpapiPluginProcessHost::Init(const PepperPluginInfo& info) {
+bool PpapiPluginProcessHost::Init(const webkit::ppapi::PluginInfo& info) {
   plugin_path_ = info.path;
   set_name(UTF8ToUTF16(info.name));
   set_version(UTF8ToUTF16(info.version));