Adding MimeHandlerView.

extensions/browser/guest_view/guest_view_manager.cc

Index: extensions/browser/guest_view/guest_view_manager.cc
diff --git a/extensions/browser/guest_view/guest_view_manager.cc b/extensions/browser/guest_view/guest_view_manager.cc
index 11acf2e58063887df314caa5770caadd394fd952..709b21402df8d250c748720ae590d46b24952d2f 100644
--- a/extensions/browser/guest_view/guest_view_manager.cc
+++ b/extensions/browser/guest_view/guest_view_manager.cc
@@ -16,6 +16,7 @@
 #include "extensions/browser/guest_view/guest_view_base.h"
 #include "extensions/browser/guest_view/guest_view_constants.h"
 #include "extensions/browser/guest_view/guest_view_manager_factory.h"
+#include "extensions/common/extension_messages.h"
 #include "net/base/escape.h"
 #include "url/gurl.h"
 
@@ -61,6 +62,36 @@ content::WebContents* GuestViewManager::GetGuestByInstanceIDSafely(
   return GetGuestByInstanceID(guest_instance_id);
 }
 
+void GuestViewManager::CreateMimeHandlerViewGuest(
+    int embedder_render_process_id,
+    int embedder_routing_id,
+    const std::string& url,
+    const std::string& mime_type,
+    int element_instance_id) {
+  content::RenderViewHost* rvh =
+      content::RenderViewHost::FromID(embedder_render_process_id,
+                                      embedder_routing_id);
+  content::WebContents* embedder_web_contents =
+      content::WebContents::FromRenderViewHost(rvh);
+  GuestViewManager::WebContentsCreatedCallback callback =
+      base::Bind(&GuestViewManager::OnMimeHandlerViewGuestCreated,
+                 // TODO(lazyboy): Use weak ptr.
+                 base::Unretained(this),
+                 element_instance_id,
+                 embedder_render_process_id,
+                 embedder_routing_id,
+                 url);
+  base::DictionaryValue create_params;
+  create_params.SetString(guestview::kMimeTypeParam, mime_type);
+  // TODO(lazyboy): use MimeHandlerViewGuest::Type, cannot do this as
+  // MimeHandlerViewGuest is under chrome/ not extensions/.
+  CreateGuest("mimehandler",

[Fady Samuel, 2014/08/29 18:52:32]

Can this be done in ExtensionMessageFilter? 

[lazyboy, 2014/08/29 22:08:26]

Done.

+              "",
+              embedder_web_contents,
+              create_params,
+              callback);
+}
+
 void GuestViewManager::AttachGuest(
     int embedder_render_process_id,
     int embedder_routing_id,
@@ -282,6 +313,34 @@ bool GuestViewManager::CanUseGuestInstanceID(int guest_instance_id) {
   return !ContainsKey(removed_instance_ids_, guest_instance_id);
 }
 
+void GuestViewManager::OnMimeHandlerViewGuestCreated(

[Fady Samuel, 2014/08/29 18:52:32]

Move this to ExtensionMessageFilter?

[lazyboy, 2014/08/29 22:08:26]

Done.

+    int element_id,
+    int embedder_render_process_id,
+    int embedder_routing_id,
+    const std::string& src,
+    content::WebContents* web_contents) {
+  GuestViewBase* guest_view = GuestViewBase::FromWebContents(web_contents);
+  if (guest_view) {

[Fady Samuel, 2014/08/29 18:52:32]

DCHECK(guest_view);

[lazyboy, 2014/08/29 22:08:26]

Done.

+    int guest_instance_id = guest_view->guest_instance_id();
+
+    base::DictionaryValue attach_params;
+    attach_params.SetString("src", src);
+    AttachGuest(
+        embedder_render_process_id,
+        embedder_routing_id,
+        element_id,
+        guest_instance_id,
+        attach_params);
+    // TODO(lazyboy): guest_instance_id not needed actually.
+    IPC::Message* msg = new ExtensionMsg_CreateMimeHandlerViewGuestACK(
+        element_id, guest_instance_id);
+    msg->set_routing_id(embedder_routing_id);
+    content::RenderViewHost* rvh =
+        content::RenderViewHost::FromID(embedder_render_process_id, embedder_routing_id);
+    rvh->Send(msg);
+  }
+}
+
 bool GuestViewManager::CanEmbedderAccessInstanceID(
     int embedder_render_process_id,
     int guest_instance_id) {