Ensure that Metro chrome in ASH is able to connect to an existing desktop chrome AURA process.

chrome/browser/browser_process.h

Index: chrome/browser/browser_process.h
===================================================================
--- chrome/browser/browser_process.h	(revision 169477)
+++ chrome/browser/browser_process.h	(working copy)
@@ -18,6 +18,7 @@
 class BackgroundModeManager;
 class BookmarkPromptController;
 class ChromeNetLog;
+class CommandLine;
 class CRLSetFetcher;
 class ComponentUpdateService;
 class DownloadRequestLimiter;
@@ -195,6 +196,9 @@
 
   virtual BookmarkPromptController* bookmark_prompt_controller() = 0;
 
+  virtual void PlatformSpecificCommandLineProcessing(
+      const CommandLine& command_line) = 0;
+
  private:
   DISALLOW_COPY_AND_ASSIGN(BrowserProcess);
 };