Fix a bug where the inspector would not keep event pages alive.

content/public/browser/notification_types.h

Index: content/public/browser/notification_types.h
diff --git a/content/public/browser/notification_types.h b/content/public/browser/notification_types.h
index a1122503301bea28ecd535a300a7ed0dc6252074..b2a162f766bc518ef775ec12373efa8f6103c82b 100644
--- a/content/public/browser/notification_types.h
+++ b/content/public/browser/notification_types.h
@@ -163,13 +163,13 @@ enum NotificationType {
 
   // Devtools ------------------------------------------------------------------
 
-  // Indicates that a devtools window is opening. The source is the
-  // BrowserContext* and the details is the inspected RenderViewHost*.
-  NOTIFICATION_DEVTOOLS_WINDOW_OPENING,
+  // Indicates that a devtools agent has attached to a client. The source is
+  // the BrowserContext* and the details is the inspected RenderViewHost*.
+  NOTIFICATION_DEVTOOLS_AGENT_ATTACHED,
 
-  // Indicates that a devtools window is closing. The source is the
-  // BrowserContext* and the details is the inspected RenderViewHost*.
-  NOTIFICATION_DEVTOOLS_WINDOW_CLOSING,
+  // Indicates that a devtools agent has detached from a client. The source is
+  // the BrowserContext* and the details is the inspected RenderViewHost*.
+  NOTIFICATION_DEVTOOLS_AGENT_DETACHED,
 
   // WebContents ---------------------------------------------------------------