Convert more interfaces to the new thunk system. This goes up to and including

webkit/plugins/ppapi/resource_tracker.cc

Index: webkit/plugins/ppapi/resource_tracker.cc
===================================================================
--- webkit/plugins/ppapi/resource_tracker.cc	(revision 87442)
+++ webkit/plugins/ppapi/resource_tracker.cc	(working copy)
@@ -17,6 +17,7 @@
 #include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
 #include "webkit/plugins/ppapi/ppb_char_set_impl.h"
 #include "webkit/plugins/ppapi/ppb_cursor_control_impl.h"
+#include "webkit/plugins/ppapi/ppb_find_impl.h"
 #include "webkit/plugins/ppapi/ppb_font_impl.h"
 #include "webkit/plugins/ppapi/resource.h"
 #include "webkit/plugins/ppapi/resource_creation_impl.h"
@@ -277,6 +278,9 @@
     case pp::proxy::INTERFACE_ID_PPB_CURSORCONTROL:
       proxy.reset(new PPB_CursorControl_Impl(instance));
       break;
+    case pp::proxy::INTERFACE_ID_PPB_FIND:
+      proxy.reset(new PPB_Find_Impl(instance));
+      break;
     case pp::proxy::INTERFACE_ID_PPB_FONT:
       proxy.reset(new PPB_Font_FunctionImpl(instance));
       break;
@@ -290,6 +294,13 @@
   return proxy.get();
 }
 
+PP_Instance ResourceTracker::GetInstanceForResource(PP_Resource pp_resource) {
+  scoped_refptr<Resource> resource(GetResource(pp_resource));
+  if (!resource.get())
+    return 0;
+  return resource->instance()->pp_instance();
+}
+
 scoped_refptr<Var> ResourceTracker::GetVar(int32 var_id) const {
   DLOG_IF(ERROR, !CheckIdType(var_id, PP_ID_TYPE_VAR))
       << var_id << " is not a PP_Var ID.";