Make <webview> use out-of-process iframe architecture.

extensions/renderer/guest_view/extensions_guest_view_container.cc

Index: extensions/renderer/guest_view/extensions_guest_view_container.cc
diff --git a/extensions/renderer/guest_view/extensions_guest_view_container.cc b/extensions/renderer/guest_view/extensions_guest_view_container.cc
index f45303051b1958cbaee97e5f03a77144abbf9462..4802d876b168916c7d0a7fb79172b7e154322171 100644
--- a/extensions/renderer/guest_view/extensions_guest_view_container.cc
+++ b/extensions/renderer/guest_view/extensions_guest_view_container.cc
@@ -4,8 +4,11 @@
 
 #include "extensions/renderer/guest_view/extensions_guest_view_container.h"
 
+#include "base/command_line.h"
+#include "content/public/common/content_switches.h"
 #include "content/public/renderer/render_frame.h"
 #include "content/public/renderer/render_view.h"
+#include "extensions/common/guest_view/extensions_guest_view_messages.h"
 #include "extensions/common/guest_view/guest_view_constants.h"
 #include "extensions/common/guest_view/guest_view_messages.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
@@ -59,6 +62,44 @@ void ExtensionsGuestViewContainer::Request::ExecuteCallbackIfAvailable(
   callback->Call(context->Global(), argc, argv.get());
 }
 
+ExtensionsGuestViewContainer::AttachIframeRequest::AttachIframeRequest(
+    GuestViewContainer* container,
+    int guest_instance_id,
+    v8::Handle<v8::Function> callback,
+    v8::Isolate* isolate)
+    : Request(container, callback, isolate),
+      guest_instance_id_(guest_instance_id) {
+}
+
+ExtensionsGuestViewContainer::AttachIframeRequest::~AttachIframeRequest() {
+}
+
+void ExtensionsGuestViewContainer::AttachIframeRequest::PerformRequest() {
+  LOG(WARNING) << "AttachIframeRequest::PerformRequest, guest_instance_id: "
+               << guest_instance_id_;
+  // Only store callback.
+  DCHECK(container()->render_frame());
+}
+
+void ExtensionsGuestViewContainer::AttachIframeRequest::HandleResponse(
+    const IPC::Message& message) {
+  ExtensionsGuestViewMsg_ContentWindowReady::Param param;
+  bool message_read_status =
+      ExtensionsGuestViewMsg_ContentWindowReady::Read(&message, &param);
+  DCHECK(message_read_status);
+
+  // If we don't have a callback then there's nothing more to do.
+  if (!HasCallback()) {
+    LOG(WARNING) << "AttachIframeRequest, no callback, bail out";
+    return;
+  }
+
+  v8::HandleScope handle_scope(isolate());
+  const int argc = 0;
+  scoped_ptr<v8::Handle<v8::Value>[]> argv(new v8::Handle<v8::Value>[argc]);
+  ExecuteCallbackIfAvailable(argc, argv.Pass());
+}
+
 ExtensionsGuestViewContainer::AttachRequest::AttachRequest(
     GuestViewContainer* container,
     int guest_instance_id,
@@ -139,6 +180,11 @@ ExtensionsGuestViewContainer::ExtensionsGuestViewContainer(
       destruction_isolate_(nullptr),
       element_resize_isolate_(nullptr),
       weak_ptr_factory_(this) {
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kSitePerProcess)) {
+    // There is not BrowserPluginDelegate to wait for.
+    ready_ = true;
+  }
 }
 
 ExtensionsGuestViewContainer::~ExtensionsGuestViewContainer() {