Removed --disable-print-preview switch and policy.

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index 61fd30900a99b4efb1a1fa67bb249eea2b2548a5..0fdd5c6953935656ef5e55f6e67489401819a0b7 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -1277,8 +1277,7 @@ void ChromeContentBrowserClient::AppendExtraCommandLineSwitches(
             switches::kDisableClientSidePhishingDetection);
       }
 
-      if (!prefs->GetBoolean(prefs::kPrintPreviewDisabled))
-        command_line->AppendSwitch(switches::kRendererPrintPreview);
+      command_line->AppendSwitch(switches::kRendererPrintPreview);

[Lei Zhang, 2014/08/20 00:01:15]

You should get rid of switches::kRendererPrintPreview as well, and assume it's
always there on the renderer side.

[Vitaly Buka (NO REVIEWS), 2014/08/20 01:16:14]

Done.

 
       InstantService* instant_service =
           InstantServiceFactory::GetForProfile(profile);