Beginnings of the script bubble.

chrome/common/chrome_switches.cc

Index: chrome/common/chrome_switches.cc
diff --git a/chrome/common/chrome_switches.cc b/chrome/common/chrome_switches.cc
index ea056f5e57725d2636647d2bcd463841f4d5b08e..7175d70d1f8e59e32871240ad7bf74408774b40b 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -1151,6 +1151,10 @@ const char kSavePageAsMHTML[] = "save-page-as-mhtml";
 // malware.
 const char kSbURLPrefix[] = "safebrowsing-url-prefix";
 
+// Enable an icon in the URL bar that tells you how many extensions are running
+// scripts on a page.
+const char kScriptBubbleEnabled[] = "script-bubble-enabled";
+
 // If present, safebrowsing only performs update when
 // SafeBrowsingProtocolManager::ForceScheduleNextUpdate() is explicitly called.
 // This is used for testing only.