Move the struct used when showing a desktop notification to content/public/common, so that chrome...

content/public/browser/content_browser_client.h

Index: content/public/browser/content_browser_client.h
===================================================================
--- content/public/browser/content_browser_client.h	(revision 109661)
+++ content/public/browser/content_browser_client.h	(working copy)
@@ -36,12 +36,12 @@
 class TabContents;
 class TabContentsView;
 class WorkerProcessHost;
-struct DesktopNotificationHostMsg_Show_Params;
 struct WebPreferences;
 
 namespace content {
 class BrowserMainParts;
 struct MainFunctionParams;
+struct ShowDesktopNotificationHostMsgParams;
 }
 
 namespace crypto {
@@ -265,7 +265,7 @@
   // Show a desktop notification.  If |worker| is true, the request came from an
   // HTML5 web worker, otherwise, it came from a renderer.
   virtual void ShowDesktopNotification(
-      const DesktopNotificationHostMsg_Show_Params& params,
+      const content::ShowDesktopNotificationHostMsgParams& params,
       int render_process_id,
       int render_view_id,
       bool worker) = 0;