Adding local html page used in Instant Extended mode when instant is disabled or unavailable.

chrome/common/url_constants.h

Index: chrome/common/url_constants.h
diff --git a/chrome/common/url_constants.h b/chrome/common/url_constants.h
index 79563eb251b50a88fdb6bfa7e2ba0cc056208824..cf783817e6d1089abd5281bbe8d67624a0df32f7 100644
--- a/chrome/common/url_constants.h
+++ b/chrome/common/url_constants.h
@@ -172,6 +172,7 @@ extern const char kChromeUIMetroFlowHost[];
 extern const char kChromeUINaClHost[];
 extern const char kChromeUINetInternalsHost[];
 extern const char kChromeUINewTabHost[];
+extern const char kChromeUILocalOmniboxPopupHost[];

[samarth, 2012/12/13 00:58:21]

Can we just use this constant (or another constant defined in this file) instead
of defining a second constant in InstantController?

At the very least, it shouldn't be possible for the two to get out of sync as is
the case right now.

[Shishir, 2012/12/13 22:57:58]

As discussed this is hard to do since we are not allowed static string members.

 extern const char kChromeUIOmniboxHost[];
 extern const char kChromeUIPerformanceMonitorHost[];
 extern const char kChromeUIPluginsHost[];