Fix a timing issue that caused gears to fail to load sometimes....

chrome/browser/plugin_process_host.cc

Index: chrome/browser/plugin_process_host.cc
===================================================================
--- chrome/browser/plugin_process_host.cc	(revision 8379)
+++ chrome/browser/plugin_process_host.cc	(working copy)
@@ -511,6 +511,11 @@
     cmd_line.AppendSwitchWithValue(switches::kLang, locale);
   }
 
+  // Gears requires the data dir to be available on startup.
+  std::wstring data_dir = plugin_service_->GetChromePluginDataDir();;
+  DCHECK(!data_dir.empty());
+  cmd_line.AppendSwitchWithValue(switches::kPluginDataDir, data_dir);
+
   cmd_line.AppendSwitchWithValue(switches::kProcessType,
                                  switches::kPluginProcess);
 
@@ -650,8 +655,6 @@
     IPC_MESSAGE_HANDLER(PluginProcessHostMsg_ShutdownRequest,
                         OnPluginShutdownRequest)
     IPC_MESSAGE_HANDLER(PluginProcessHostMsg_PluginMessage, OnPluginMessage)
-    IPC_MESSAGE_HANDLER(PluginProcessHostMsg_GetPluginDataDir,
-                        OnGetPluginDataDir)
     IPC_MESSAGE_HANDLER(ViewHostMsg_RequestResource, OnRequestResource)
     IPC_MESSAGE_HANDLER(ViewHostMsg_CancelRequest, OnCancelRequest)
     IPC_MESSAGE_HANDLER(ViewHostMsg_DataReceived_ACK, OnDataReceivedACK)
@@ -918,10 +921,6 @@
   }
 }
 
-void PluginProcessHost::OnGetPluginDataDir(std::wstring* retval) {
-  *retval = plugin_service_->GetChromePluginDataDir();
-}
-
 void PluginProcessHost::OnCreateWindow(HWND parent, IPC::Message* reply_msg) {
   // Need to create this window on the UI thread.
   plugin_service_->main_message_loop()->PostTask(FROM_HERE,