Change EXTENSION_PROCESS_CREATED observers to use EXTENSION_HOST_CREATED.

chrome/common/chrome_notification_types.h

Index: chrome/common/chrome_notification_types.h
diff --git a/chrome/common/chrome_notification_types.h b/chrome/common/chrome_notification_types.h
index 207ae7b0a2d93953f46c5efc3736445e0edd6153..eb9bf0a36331a4894f75b6e5a0b61ccbe055f78f 100644
--- a/chrome/common/chrome_notification_types.h
+++ b/chrome/common/chrome_notification_types.h
@@ -417,7 +417,7 @@ enum NotificationType {
   NOTIFICATION_EXTENSION_UNLOADED,
 
   // Sent after a new ExtensionHost is created. The details are
-  // an ExtensionHost* and the source is an ExtensionProcessManager*.
+  // an ExtensionHost* and the source is a Profile*.
   NOTIFICATION_EXTENSION_HOST_CREATED,
 
   // Sent before an ExtensionHost is destroyed. The details are
@@ -433,10 +433,6 @@ enum NotificationType {
   // Profile*.
   NOTIFICATION_EXTENSION_HOST_VIEW_SHOULD_CLOSE,
 
-  // Sent after an extension render process is created and fully functional.
-  // The details are an ExtensionHost*.
-  NOTIFICATION_EXTENSION_PROCESS_CREATED,
-
   // Sent when extension render process ends (whether it crashes or closes).
   // The details are an ExtensionHost* and the source is a Profile*. Not sent
   // during browser shutdown.