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

content/browser/frame_host/render_frame_host_manager.cc

Index: content/browser/frame_host/render_frame_host_manager.cc
diff --git a/content/browser/frame_host/render_frame_host_manager.cc b/content/browser/frame_host/render_frame_host_manager.cc
index 4389f931e5d9565f5b36c93f4cd104517d65d28d..a71bfa04312b29e21b72beb148380899b0a131d1 100644
--- a/content/browser/frame_host/render_frame_host_manager.cc
+++ b/content/browser/frame_host/render_frame_host_manager.cc
@@ -144,6 +144,18 @@ RenderWidgetHostView* RenderFrameHostManager::GetRenderWidgetHostView() const {
   return nullptr;
 }
 
+RenderWidgetHostImpl*
+RenderFrameHostManager::GetOuterRenderWidgetHostForKeyboardInput() {
+  if (!ForInnerDelegate())
+    return nullptr;
+
+  FrameTreeNode* outer_contents_frame_tree_node =
+      FrameTreeNode::GloballyFindByID(
+          delegate_->GetOuterDelegateFrameTreeNodeID());
+  return outer_contents_frame_tree_node->current_frame_host()
+      ->render_view_host();
+}
+
 RenderFrameProxyHost* RenderFrameHostManager::GetProxyToParent() {
   if (frame_tree_node_->IsMainFrame())
     return NULL;
@@ -160,6 +172,26 @@ RenderFrameProxyHost* RenderFrameHostManager::GetProxyToParent() {
   return iter->second;
 }
 
+RenderFrameProxyHost* RenderFrameHostManager::GetProxyToOuterDelegate() {
+  int outer_contents_frame_tree_node_id =
+      delegate_->GetOuterDelegateFrameTreeNodeID();
+  FrameTreeNode* outer_contents_frame_tree_node =
+      FrameTreeNode::GloballyFindByID(outer_contents_frame_tree_node_id);
+  if (!outer_contents_frame_tree_node)
+    return nullptr;
+
+  return GetRenderFrameProxyHost(
+      outer_contents_frame_tree_node->current_frame_host()->GetSiteInstance());
+}
+
+bool RenderFrameHostManager::ForInnerDelegate() {
+  // TODO(lazyboy): We should remove IsMainFrame() check below since any frames
+  // in the inner WebContents should be treated as a part of inner
+  // WebContents/Delegate.
+  return frame_tree_node_->IsMainFrame() &&
+         delegate_->GetOuterDelegateFrameTreeNodeID() != -1;
+}
+
 void RenderFrameHostManager::SetPendingWebUI(const GURL& url, int bindings) {
   pending_web_ui_ = CreateWebUI(url, bindings);
   pending_and_current_web_ui_.reset();
@@ -1604,6 +1636,38 @@ void RenderFrameHostManager::EnsureRenderViewInitialized(
   proxy->set_render_frame_proxy_created(true);
 }
 
+int RenderFrameHostManager::CreateOuterDelegateProxy(
+    SiteInstance* outer_contents_site_instance) {
+  CHECK(base::CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kSitePerProcess));
+  int outer_contents_proxy_flags = CREATE_RF_HIDDEN | CREATE_RF_SWAPPED_OUT |
+                                   CREATE_RF_FOR_MAIN_FRAME_NAVIGATION;
+  int swapped_out_render_view_routing_id;  // Unused.
+  scoped_ptr<RenderFrameHostImpl> swapped_out_rfh_in_outer_contents =
+      CreateRenderFrame(outer_contents_site_instance, nullptr,
+                        MSG_ROUTING_NONE,  // opener_route_id
+                        outer_contents_proxy_flags,
+                        &swapped_out_render_view_routing_id);
+
+  RenderFrameProxyHost* rfph_in_outer_contents =
+      GetRenderFrameProxyHost(outer_contents_site_instance);
+  DCHECK(rfph_in_outer_contents);
+  return rfph_in_outer_contents->GetRoutingID();
+}
+
+void RenderFrameHostManager::SwapFrameWithProxy(
+    int proxy_to_outer_delegate_routing_id) {
+  DCHECK(!frame_tree_node_->IsLoading());
+  current_frame_host()->Send(new FrameMsg_SwapOut(
+      current_frame_host()->GetRoutingID(), proxy_to_outer_delegate_routing_id,
+      false /* is_loading */, FrameReplicationState()));
+}
+
+void RenderFrameHostManager::SetRWHViewForInnerContents(
+    RenderWidgetHostView* child_rwhv) {
+  GetProxyToOuterDelegate()->SetChildRWHView(child_rwhv);
+}
+
 bool RenderFrameHostManager::InitRenderView(
     RenderViewHostImpl* render_view_host,
     int opener_route_id,