Fixes for -Wunused-function on Linux, Android and ChromeOS

chrome/browser/ui/webui/instant_ui.cc

Index: chrome/browser/ui/webui/instant_ui.cc
diff --git a/chrome/browser/ui/webui/instant_ui.cc b/chrome/browser/ui/webui/instant_ui.cc
index cc67fb40ed56adba24c0f99d268e40fe67eebc0b..6326e9f6ab40b0bba98192336e82e42c14507d36 100644
--- a/chrome/browser/ui/webui/instant_ui.cc
+++ b/chrome/browser/ui/webui/instant_ui.cc
@@ -33,6 +33,7 @@ content::WebUIDataSource* CreateInstantHTMLSource() {
   return source;
 }
 
+#if !defined(OS_ANDROID)
 std::string FormatTime(int64 time) {
   base::Time::Exploded exploded;
   base::Time::FromInternalValue(time).UTCExplode(&exploded);
@@ -40,6 +41,7 @@ std::string FormatTime(int64 time) {
       exploded.year, exploded.month, exploded.day_of_month,
       exploded.hour, exploded.minute, exploded.second, exploded.millisecond);
 }
+#endif  // !defined(OS_ANDROID)
 
 // This class receives JavaScript messages from the renderer.
 // Note that the WebUI infrastructure runs on the UI thread, therefore all of