Adding RenderWidgetHostViewChildFrame for OOPIF view.

RenderWidgetHostViewChildFrame becomes the view class for child frames being
rendered in a different process from their parent. CrossProcessFrameConnector
is a supporting class for that, encapsulating state specific to the
parent/child frame relationship.

RenderWidgetHostViewGuest is made a subclass of RenderWidgetHostViewChildFrame
in order to keep them synchronized. Gradually we will move all functionality
from RWHVGuest to RWHVChildFrame and then get rid of RWHVGuest altogether.

TBR=sadrul
BUG=325803

Review URL: https://codereview.chromium.org/100473010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@242942 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 20 insertions, 35 deletions

diff --git a/content/common/browser_plugin/browser_plugin_messages.h b/content/common/browser_plugin/browser_plugin_messages.h
index c85b229..be34c7b 100644
--- a/content/common/browser_plugin/browser_plugin_messages.h
+++ b/content/common/browser_plugin/browser_plugin_messages.h
@@ -15,6 +15,7 @@
 #include "content/common/content_export.h"
 #include "content/common/content_param_traits.h"
 #include "content/common/edit_command.h"
+#include "content/common/frame_param_macros.h"
 #include "content/public/common/browser_plugin_permission_type.h"
 #include "content/public/common/common_param_traits.h"
 #include "content/public/common/drop_data.h"
@@ -85,14 +86,6 @@ IPC_STRUCT_BEGIN(BrowserPluginMsg_Attach_ACK_Params)
   IPC_STRUCT_MEMBER(std::string, name)
 IPC_STRUCT_END()
 
-IPC_STRUCT_BEGIN(BrowserPluginMsg_BuffersSwapped_Params)
-  IPC_STRUCT_MEMBER(gfx::Size, size)
-  IPC_STRUCT_MEMBER(gfx::Rect, damage_rect)
-  IPC_STRUCT_MEMBER(std::string, mailbox_name)
-  IPC_STRUCT_MEMBER(int, route_id)
-  IPC_STRUCT_MEMBER(int, host_id)
-IPC_STRUCT_END()
-
 IPC_STRUCT_BEGIN(BrowserPluginMsg_UpdateRect_Params)
   // The sequence number of the damage buffer used by the browser process.
   IPC_STRUCT_MEMBER(uint32, damage_buffer_sequence_id)
@@ -228,29 +221,11 @@ IPC_MESSAGE_ROUTED2(BrowserPluginHostMsg_NavigateGuest,
                     int /* instance_id*/,
                     std::string /* src */)
 
-// Acknowledge that we presented a HW buffer and provide a sync point
-// to specify the location in the command stream when the compositor
-// is no longer using it.
-IPC_MESSAGE_ROUTED5(BrowserPluginHostMsg_BuffersSwappedACK,
-                    int /* instance_id */,
-                    int /* route_id */,
-                    int /* gpu_host_id */,
-                    std::string /* mailbox_name */,
-                    uint32 /* sync_point */)
-
 IPC_MESSAGE_ROUTED3(BrowserPluginHostMsg_CopyFromCompositingSurfaceAck,
                     int /* instance_id */,
                     int /* request_id */,
                     SkBitmap);
 
-// Acknowledge that we presented an ubercomp frame.
-IPC_MESSAGE_ROUTED5(BrowserPluginHostMsg_CompositorFrameACK,
-                    int /* instance_id */,
-                    int /* route_id */,
-                    uint32 /* output_surface_id */,
-                    int /* renderer_host_id */,
-                    cc::CompositorFrameAck /* ack */)
-
 // Notify the guest renderer that some resources given to the embededer
 // are not used any more.
 IPC_MESSAGE_ROUTED5(BrowserPluginHostMsg_ReclaimCompositorResources,
@@ -389,21 +364,31 @@ IPC_MESSAGE_CONTROL2(BrowserPluginMsg_UpdatedName,
                      std::string /* name */)
 
 // Guest renders into an FBO with textures provided by the embedder.
-// When HW accelerated buffers are swapped in the guest, the message
-// is forwarded to the embedder to notify it of a new texture
-// available for compositing.
+// BrowserPlugin shares mostly the same logic as out-of-process RenderFrames but
+// because BrowserPlugins implement custom a second level of routing logic,
+// the IPCs need to be annotated with an extra instance_id. These messages
+// provide that extra id.
 IPC_MESSAGE_CONTROL2(BrowserPluginMsg_BuffersSwapped,
                      int /* instance_id */,
-                     BrowserPluginMsg_BuffersSwapped_Params)
+                     FrameMsg_BuffersSwapped_Params /* params */)
 
-IPC_MESSAGE_CONTROL5(BrowserPluginMsg_CompositorFrameSwapped,
+IPC_MESSAGE_CONTROL2(BrowserPluginMsg_CompositorFrameSwapped,
                      int /* instance_id */,
-                     cc::CompositorFrame /* frame */,
-                     int /* route_id */,
-                     uint32 /* output_surface_id */,
-                     int /* renderer_host_id */)
+                     FrameMsg_CompositorFrameSwapped_Params /* params */)
 
 // Forwards a PointerLock Unlock request to the BrowserPlugin.
 IPC_MESSAGE_CONTROL2(BrowserPluginMsg_SetMouseLock,
                      int /* instance_id */,
                      bool /* enable */)
+
+// See comment about BrowserPluginMsg_BuffersSwapped and
+// BrowserPluginMsg_CompositorFrameSwapped for how these related
+// to the FrameHostMsg variants.
+IPC_MESSAGE_ROUTED2(BrowserPluginHostMsg_BuffersSwappedACK,
+                    int /* instance_id */,
+                    FrameHostMsg_BuffersSwappedACK_Params /* params */)
+
+// Acknowledge that we presented an ubercomp frame.
+IPC_MESSAGE_ROUTED2(BrowserPluginHostMsg_CompositorFrameSwappedACK,
+                    int /* instance_id */,
+                    FrameHostMsg_CompositorFrameSwappedACK_Params /* params */)