Browser plugin: Implement loadStart and loadAbort events

content/common/browser_plugin_messages.h

Index: content/common/browser_plugin_messages.h
diff --git a/content/common/browser_plugin_messages.h b/content/common/browser_plugin_messages.h
index 563684b4b10e63ed842fbd17dfc4ae0364ce6d7f..702d239db5c6aeada2861fbeb97db4b7534ad821 100644
--- a/content/common/browser_plugin_messages.h
+++ b/content/common/browser_plugin_messages.h
@@ -125,6 +125,19 @@ IPC_SYNC_MESSAGE_ROUTED2_0(BrowserPluginHostMsg_ResizeGuest,
 // -----------------------------------------------------------------------------
 // These messages are from the browser process to the embedder.
 
+// When the guest begins to load a page, the browser process informs the
+// embedder through the BrowserPluginMsg_LoadStart message.
+IPC_MESSAGE_CONTROL3(BrowserPluginMsg_LoadStart,
+                     int /* instance_id */,
+                     GURL /* url */,
+                     bool /* is_top_level */)
+
+IPC_MESSAGE_CONTROL4(BrowserPluginMsg_LoadAbort,

[Charlie Reis, 2012/10/03 01:52:30]

This should have a comment describing the types, etc.

Also, I don't see anyone sending this message.  (Guess we do need a test for
it.)  :)

[Fady Samuel, 2012/10/04 00:43:38]

Done. Although, I don't know if this is the best possible comment here, please
advise whether I should write something more descriptive. Thanks. I don't
exactly know what the cases are for a load to fail.

+                     int /* instance_id */,
+                     GURL /* url */,
+                     bool /* is_top_level */,
+                     std::string /* type */)
+
 // When the guest navigates, the browser process informs the embedder through
 // the BrowserPluginMsg_DidNavigate message.
 IPC_MESSAGE_CONTROL3(BrowserPluginMsg_DidNavigate,