Fix some WeakPtrFactory members that aren't last

chrome/renderer/pepper/pepper_flash_renderer_host.h

Index: chrome/renderer/pepper/pepper_flash_renderer_host.h
diff --git a/chrome/renderer/pepper/pepper_flash_renderer_host.h b/chrome/renderer/pepper/pepper_flash_renderer_host.h
index 299b1094a5f7d4eb02420b3675ea0482789a6099..79088800c912ff3e16bcdc4dd5bf55f1f6edac43 100644
--- a/chrome/renderer/pepper/pepper_flash_renderer_host.h
+++ b/chrome/renderer/pepper/pepper_flash_renderer_host.h
@@ -59,12 +59,12 @@ class PepperFlashRendererHost : public ppapi::host::ResourceHost {
                           const PP_Rect& rect);
   int32_t OnInvokePrinting(ppapi::host::HostMessageContext* host_context);
 
-  base::WeakPtrFactory<PepperFlashRendererHost> weak_factory_;
   // A stack of ReplyMessageContexts to track Navigate() calls which have not
   // yet been replied to.
   std::vector<ppapi::host::ReplyMessageContext> navigate_replies_;
 
   content::RendererPpapiHost* host_;
+  base::WeakPtrFactory<PepperFlashRendererHost> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperFlashRendererHost);
 };