Don't focus the location bar for NTP navigations in non-selected tabs.

chrome/browser/ui/browser.cc

Index: chrome/browser/ui/browser.cc
diff --git a/chrome/browser/ui/browser.cc b/chrome/browser/ui/browser.cc
index b64ad9188e41876adfbc062c9ba58453894c622b..db53835595470c6b7163ac43d6556b9eab517852 100644
--- a/chrome/browser/ui/browser.cc
+++ b/chrome/browser/ui/browser.cc
@@ -1551,6 +1551,11 @@ void Browser::BeforeUnloadFired(WebContents* web_contents,
 }
 
 bool Browser::ShouldFocusLocationBarByDefault(WebContents* source) {
+  // Navigations in background tabs shouldn't change the focus state of the
+  // omnibox, since it's associated with the foreground tab.
+  if (source != tab_strip_model_->GetActiveWebContents())
+    return false;
+
   const content::NavigationEntry* entry =
       source->GetController().GetActiveEntry();
   if (entry) {