Fix crashing bug with session sync enabled and opening developer tools.

chrome/browser/ui/browser_synced_window_delegate.cc

Index: chrome/browser/ui/browser_synced_window_delegate.cc
diff --git a/chrome/browser/ui/browser_synced_window_delegate.cc b/chrome/browser/ui/browser_synced_window_delegate.cc
index d9a0947bc7e1de0f3577c5e724cb61fa39c5f227..cc95ac6e80dd94c397f66a1de90a7c212a2cc041 100644
--- a/chrome/browser/ui/browser_synced_window_delegate.cc
+++ b/chrome/browser/ui/browser_synced_window_delegate.cc
@@ -29,7 +29,12 @@ const std::set<browser_sync::SyncedWindowDelegate*>
 const browser_sync::SyncedWindowDelegate*
     browser_sync::SyncedWindowDelegate::FindSyncedWindowDelegateWithId(
         SessionID::id_type id) {
-  return BrowserList::FindBrowserWithID(id)->synced_window_delegate();
+  Browser* browser = BrowserList::FindBrowserWithID(id);
+  // In case we don't find the browser (e.g. for Developer Tools).
+  if (browser) {

[sky, 2011/08/01 20:26:10]

nit:
return browser ? browser->... : NULL

+    return browser->synced_window_delegate();
+  }
+  return NULL;
 }
 
 // BrowserSyncedWindowDelegate implementations