Adding MimeHandlerView.

extensions/browser/extension_message_filter.cc

Index: extensions/browser/extension_message_filter.cc
diff --git a/extensions/browser/extension_message_filter.cc b/extensions/browser/extension_message_filter.cc
index 7529fd02ae427d8c51390618bc958af7af1a5fe6..1206ae222cfe78fdce8da920368dd2ba7cd853bb 100644
--- a/extensions/browser/extension_message_filter.cc
+++ b/extensions/browser/extension_message_filter.cc
@@ -6,13 +6,18 @@
 
 #include "components/crx_file/id_util.h"
 #include "content/public/browser/browser_thread.h"
+#include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/render_process_host.h"
+#include "content/public/browser/render_view_host.h"
 #include "content/public/browser/resource_dispatcher_host.h"
 #include "extensions/browser/blob_holder.h"
 #include "extensions/browser/event_router.h"
 #include "extensions/browser/extension_function_dispatcher.h"
 #include "extensions/browser/extension_system.h"
+#include "extensions/browser/guest_view/guest_view_base.h"
 #include "extensions/browser/guest_view/guest_view_manager.h"
+#include "extensions/browser/guest_view/mime_handler_view/mime_handler_view_constants.h"
+#include "extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.h"
 #include "extensions/browser/info_map.h"
 #include "extensions/browser/process_manager.h"
 #include "extensions/common/extension.h"
@@ -46,6 +51,7 @@ void ExtensionMessageFilter::OverrideThreadForMessage(
     case ExtensionHostMsg_AttachGuest::ID:
     case ExtensionHostMsg_RemoveListener::ID:
     case ExtensionHostMsg_AddLazyListener::ID:
+    case ExtensionHostMsg_CreateMimeHandlerViewGuest::ID:
     case ExtensionHostMsg_RemoveLazyListener::ID:
     case ExtensionHostMsg_AddFilteredListener::ID:
     case ExtensionHostMsg_RemoveFilteredListener::ID:
@@ -76,6 +82,8 @@ bool ExtensionMessageFilter::OnMessageReceived(const IPC::Message& message) {
                         OnExtensionAddLazyListener)
     IPC_MESSAGE_HANDLER(ExtensionHostMsg_AttachGuest,
                         OnExtensionAttachGuest)
+    IPC_MESSAGE_HANDLER(ExtensionHostMsg_CreateMimeHandlerViewGuest,
+                        OnExtensionCreateMimeHandlerViewGuest)
     IPC_MESSAGE_HANDLER(ExtensionHostMsg_RemoveLazyListener,
                         OnExtensionRemoveLazyListener)
     IPC_MESSAGE_HANDLER(ExtensionHostMsg_AddFilteredListener,
@@ -167,6 +175,40 @@ void ExtensionMessageFilter::OnExtensionAttachGuest(
                        params);
 }
 
+void ExtensionMessageFilter::OnExtensionCreateMimeHandlerViewGuest(
+    int render_frame_id,
+    const std::string& src,
+    const std::string& mime_type,
+    int element_instance_id) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  extensions::GuestViewManager* manager =
+      extensions::GuestViewManager::FromBrowserContext(browser_context_);
+  if (!manager)
+    return;
+
+  content::RenderFrameHost* rfh =
+      content::RenderFrameHost::FromID(render_process_id_, render_frame_id);
+  content::WebContents* embedder_web_contents =
+      content::WebContents::FromRenderFrameHost(rfh);
+  if (!embedder_web_contents)
+    return;
+
+  GuestViewManager::WebContentsCreatedCallback callback =
+      base::Bind(&ExtensionMessageFilter::MimeHandlerViewGuestCreatedCallback,
+                 this,
+                 element_instance_id,
+                 render_process_id_,
+                 render_frame_id,
+                 src);
+  base::DictionaryValue create_params;
+  create_params.SetString(mimehandlerview::kMimeType, mime_type);
+  manager->CreateGuest(MimeHandlerViewGuest::Type,
+                       "",
+                       embedder_web_contents,
+                       create_params,
+                       callback);
+}
+
 void ExtensionMessageFilter::OnExtensionRemoveLazyListener(
     const std::string& extension_id, const std::string& event_name) {
   EventRouter* router = EventRouter::Get(browser_context_);
@@ -252,4 +294,40 @@ void ExtensionMessageFilter::OnExtensionRequestForIOThread(
       params);
 }
 
+void ExtensionMessageFilter::MimeHandlerViewGuestCreatedCallback(
+    int element_instance_id,
+    int embedder_render_process_id,
+    int embedder_render_frame_id,
+    const std::string& src,
+    content::WebContents* web_contents) {
+  extensions::GuestViewManager* manager =
+      extensions::GuestViewManager::FromBrowserContext(browser_context_);
+  if (!manager)
+    return;
+
+  extensions::GuestViewBase* guest_view =
+      extensions::GuestViewBase::FromWebContents(web_contents);

[Fady Samuel, 2014/09/04 17:31:07]

Be more specific: MimeHandlerViewGuest::FromWebContents.

If the GuestView type is wrong, it'll return NULL. This is an extra safety check
that you get essentially for free.

[lazyboy, 2014/09/04 18:59:33]

Thanks.
Done.

+  if (!guest_view)
+    return;
+  int guest_instance_id = guest_view->guest_instance_id();
+
+  content::RenderFrameHost* rfh = content::RenderFrameHost::FromID(
+      embedder_render_process_id, embedder_render_frame_id);
+  if (!rfh)
+    return;
+
+  base::DictionaryValue attach_params;
+  attach_params.SetString(mimehandlerview::kSrc, src);
+  manager->AttachGuest(embedder_render_process_id,
+                       rfh->GetRenderViewHost()->GetRoutingID(),
+                       element_instance_id,
+                       guest_instance_id,
+                       attach_params);
+
+  IPC::Message* msg =
+      new ExtensionMsg_CreateMimeHandlerViewGuestACK(element_instance_id);
+  msg->set_routing_id(rfh->GetRoutingID());
+  rfh->Send(msg);
+}
+
 }  // namespace extensions