3D Compositing in <browser>, first draft.

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 af68c719d6f67cc4962608390f8a259df2eeccd9..67d6b40ba0e7920103fdda2c9ad1331be529781a 100644
--- a/content/common/browser_plugin_messages.h
+++ b/content/common/browser_plugin_messages.h
@@ -8,6 +8,7 @@
 
 #include "base/basictypes.h"
 #include "base/process.h"
+#include "content/common/browser_plugin_info.h"
 #include "content/common/content_export.h"
 #include "content/public/common/common_param_traits.h"
 #include "ipc/ipc_channel_handle.h"
@@ -27,6 +28,20 @@
 // -----------------------------------------------------------------------------
 // These messages are from the embedder to the browser process.
 
+IPC_STRUCT_TRAITS_BEGIN(BrowserPluginHostMsg_Surface_Params)
+  IPC_STRUCT_TRAITS_MEMBER(gpu_process_id)
+  IPC_STRUCT_TRAITS_MEMBER(client_id)
+  IPC_STRUCT_TRAITS_MEMBER(context_id)
+  IPC_STRUCT_TRAITS_MEMBER(texture_id[0])
+  IPC_STRUCT_TRAITS_MEMBER(texture_id[1])
+  IPC_STRUCT_TRAITS_MEMBER(sync_point)
+IPC_STRUCT_TRAITS_END()
+
+IPC_STRUCT_TRAITS_BEGIN(BrowserPlugin_SwapInfo)
+  IPC_STRUCT_TRAITS_MEMBER(route_id)
+  IPC_STRUCT_TRAITS_MEMBER(gpu_host_id)
+IPC_STRUCT_TRAITS_END()
+
 // Tells the guest to focus or defocus itself.
 IPC_MESSAGE_ROUTED2(BrowserPluginHostMsg_SetFocus,
                     int /* instance_id */,
@@ -54,10 +69,15 @@ IPC_MESSAGE_ROUTED3(BrowserPluginHostMsg_UpdateRect_ACK,
 // that WebContents. If not, it will create the WebContents, associate it with
 // the BrowserPlugin's browser-side BrowserPluginHost as a guest, and navigate
 // it to the requested URL.
-IPC_MESSAGE_ROUTED3(BrowserPluginHostMsg_NavigateOrCreateGuest,
+IPC_MESSAGE_ROUTED4(BrowserPluginHostMsg_NavigateOrCreateGuest,
                     int /* instance_id*/,
                     long long /* frame_id */,
-                    std::string /* src */)
+                    std::string /* src */,
+                    BrowserPluginHostMsg_Surface_Params /* surface params */)

[scshunt, 2012/08/12 01:42:45]

Do we need to send surface parameters with every go? Does having this message be
transparent as to the presence of a guest preclude there from being a
distinction?

[scshunt, 2012/08/17 17:30:28]

A: Yes we do, since we want a new surface for cross-process nav so that we don't
have two renderers fighting on the same textures.

+
+IPC_MESSAGE_ROUTED2(BrowserPluginHostMsg_BuffersSwappedACK,
+                    BrowserPlugin_SwapInfo /* info */,
+                    uint32 /* sync_point */)
 
 // When a BrowserPlugin has been removed from the embedder's DOM, it informs
 // the browser process to cleanup the guest.
@@ -136,6 +156,9 @@ IPC_STRUCT_BEGIN(BrowserPluginMsg_UpdateRect_Params)
 
   // Is this UpdateRect an ACK to a resize request?
   IPC_STRUCT_MEMBER(bool, is_resize_ack)
+
+  // Do we need to reply to it
+  IPC_STRUCT_MEMBER(bool, needs_ack)
 IPC_STRUCT_END()
 
 // When the user tabs to the end of the tab stops of a guest, the browser
@@ -144,6 +167,15 @@ IPC_MESSAGE_CONTROL2(BrowserPluginMsg_AdvanceFocus,
                      int /* instance_id */,
                      bool /* reverse */)
 
+IPC_MESSAGE_CONTROL3(BrowserPluginMsg_BuffersSwapped,
+                     int /* instance_id */,
+                     uint64 /* surface_handle */,
+                     BrowserPlugin_SwapInfo /* info */)
+
+IPC_MESSAGE_CONTROL2(BrowserPluginMsg_SurfaceResize,
+                     int /* instance_id */,
+                     gfx::Size /* size */)
+
 // The guest has damage it wants to convey to the embedder so that it can
 // update its backing store.
 IPC_MESSAGE_CONTROL3(BrowserPluginMsg_UpdateRect,