New link rel=prerender api, using WebKit::WebPrerenderingPlatform

chrome/common/prerender_messages.h

Index: chrome/common/prerender_messages.h
diff --git a/chrome/common/prerender_messages.h b/chrome/common/prerender_messages.h
index 4c965a94f9fdeae3a7abb37734a4d1fcf63bd7a0..10aa7101248d727aa6930d3031933d40ae980005 100644
--- a/chrome/common/prerender_messages.h
+++ b/chrome/common/prerender_messages.h
@@ -3,13 +3,41 @@
 // found in the LICENSE file.
 
 // Multiply-included message file, no traditional include guard.
+#include "content/public/common/common_param_traits.h"
+#include "content/public/common/referrer.h"
 #include "googleurl/src/gurl.h"
 #include "ipc/ipc_message.h"
 #include "ipc/ipc_message_macros.h"
 #include "ipc/ipc_param_traits.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebReferrerPolicy.h"
+#include "ui/gfx/size.h"
 
 #define IPC_MESSAGE_START PrerenderMsgStart
 
+// Prerender Link Manager Messages

[mmenke, 2012/05/01 16:23:21]

nit:  PrerenderLinkManager

[gavinp, 2012/05/01 18:50:22]

Done.

+// These are messages sent from the renderer to the browser in
+// relation to <link rel=prerender> elements.
+
+// Notifies of the insertion of a <link rel=prerender> element in the
+// document.
+IPC_MESSAGE_CONTROL5(PrerenderHostMsg_AddPrerender,
+                     int /* id, assigned by WebPrerendererClient */,
+                     GURL /* url */,
+                     content::Referrer,
+                     gfx::Size,
+                     int /* render_view_route_id of launcher */)
+
+// Notifies on removal of a <link rel=prerender> element from the document.
+IPC_MESSAGE_CONTROL1(PrerenderHostMsg_CancelPrerender,
+                     int /* id, assigned by WebPrerendererClient */)
+
+// Notifies on unloading a <link rel=prerender> element from a frame.
+IPC_MESSAGE_CONTROL1(PrerenderHostMsg_AbandonPrerender,
+                     int /* id, assigned by WebPrerendererClient */)
+
+// Prerender View Host Messages

[mmenke, 2012/05/01 16:23:21]

What is a Prerender View Host?  Generally (Like just above), messages are named
for who they're sent to, not who they're sent from, and "Host" objects are
generally in the browser process, but these are sent to the render process.

[gavinp, 2012/05/01 18:50:22]

Good point.  Renamed to PrerenderDispatcher Messages.

+// These are messages sent in relation to running prerenders.
+
 // Tells a renderer if it's currently being prerendered.  Must only be set
 // to true before any navigation occurs, and only set to false at most once
 // after that.