Introduce InfoBarTabService API.

chrome/browser/ui/startup/session_crashed_prompt.cc

Index: chrome/browser/ui/startup/session_crashed_prompt.cc
diff --git a/chrome/browser/ui/startup/session_crashed_prompt.cc b/chrome/browser/ui/startup/session_crashed_prompt.cc
index 855e4d9f29540b2b8614a84df40dd369d9c62297..6cf0620354e951d202e35182ea3b4d1c3a80a265 100644
--- a/chrome/browser/ui/startup/session_crashed_prompt.cc
+++ b/chrome/browser/ui/startup/session_crashed_prompt.cc
@@ -59,7 +59,7 @@ SessionCrashedInfoBarDelegate::SessionCrashedInfoBarDelegate(
     : ConfirmInfoBarDelegate(infobar_helper),
       accepted_(false),
       removed_notification_received_(false),
-      browser_(browser::FindBrowserWithWebContents(owner()->web_contents())) {
+      browser_(browser::FindBrowserWithWebContents(owner()->GetWebContents())) {
   // TODO(pkasting,marja): Once InfoBars own they delegates, this is not needed
   // any more. Then we can rely on delegates getting destroyed, and we can
   // initiate the session storage scavenging only in the destructor. (Currently,
@@ -143,7 +143,7 @@ void ShowSessionCrashedPrompt(Browser* browser) {
     return;
 
   // Don't show the info-bar if there are already info-bars showing.
-  if (tab->infobar_tab_helper()->infobar_count() > 0)
+  if (tab->infobar_tab_helper()->GetInfoBarCount() > 0)
     return;
 
   tab->infobar_tab_helper()->AddInfoBar(