Reland: Convert ExtensionProcessManager to BrowserContext, part 1

extensions/common/switches.cc

Index: extensions/common/switches.cc
diff --git a/extensions/common/switches.cc b/extensions/common/switches.cc
index 3c8ab10462710a9767d9f3bf71a412d03b91a0a6..674bb03e4e4edbd7bfc1203a96384c549c3e2f18 100644
--- a/extensions/common/switches.cc
+++ b/extensions/common/switches.cc
@@ -26,6 +26,14 @@ const char kEnableExperimentalExtensionApis[] =
 // them in the chrome:extensions page.
 const char kErrorConsole[] = "error-console";
 
+// The time in seconds that an extension event page can be idle before it
+// is shut down.
+const char kEventPageIdleTime[]             = "event-page-idle-time";
+
+// The time in seconds that an extension event page has between being notified
+// of its impending unload and that unload happening.
+const char kEventPageSuspendingTime[]       = "event-page-unloading-time";
+
 // Enables extensions running scripts on chrome:// URLs.
 // Extensions still need to explicitly request access to chrome:// URLs in the
 // manifest.