linux: pass a bunch more ui tests.

chrome/browser/automation/automation_provider.cc

Index: chrome/browser/automation/automation_provider.cc
diff --git a/chrome/browser/automation/automation_provider.cc b/chrome/browser/automation/automation_provider.cc
index 37e7b7e7221b1182cea9dabf795acb3e333f9d8b..e98bd0aed28de2408452baf3cd08b7645b436c68 100644
--- a/chrome/browser/automation/automation_provider.cc
+++ b/chrome/browser/automation/automation_provider.cc
@@ -2511,6 +2511,7 @@ void AutomationProvider::OnMessageFromExternalHost(int handle,
     view_host->ForwardMessageFromExternalHost(message, origin, target);
   }
 }
+#endif  // defined(OS_WIN)
 
 WebContents* AutomationProvider::GetWebContentsForHandle(
     int handle, NavigationController** tab) {
@@ -2527,6 +2528,7 @@ WebContents* AutomationProvider::GetWebContentsForHandle(
   return web_contents;
 }
 
+#if defined(OS_WIN)
 ExternalTabContainer* AutomationProvider::GetExternalTabForHandle(int handle) {
   if (tab_tracker_->ContainsHandle(handle)) {
     NavigationController* tab = tab_tracker_->GetResource(handle);