Replace IPC messages in layout_test_render_frame_observer.

content/shell/browser/layout_test/blink_test_controller.cc

Index: content/shell/browser/layout_test/blink_test_controller.cc
diff --git a/content/shell/browser/layout_test/blink_test_controller.cc b/content/shell/browser/layout_test/blink_test_controller.cc
index e318bf9d1b81e132496a79a3770ba2057b29b142..4a806d5a72eeeb144ab0deed11fc0c7baf7a0e2f 100644
--- a/content/shell/browser/layout_test/blink_test_controller.cc
+++ b/content/shell/browser/layout_test/blink_test_controller.cc
@@ -38,6 +38,7 @@
 #include "content/public/browser/service_worker_context.h"
 #include "content/public/browser/storage_partition.h"
 #include "content/public/browser/web_contents.h"
+#include "content/public/common/associated_interface_provider.h"
 #include "content/public/common/bindings_policy.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/url_constants.h"
@@ -280,6 +281,7 @@ bool BlinkTestController::PrepareForLayoutTest(
   all_observed_render_process_hosts_.clear();
   main_window_render_process_hosts_.clear();
   accumulated_layout_test_runtime_flags_changes_.Clear();
+  layout_test_control_map_.clear();
   ShellBrowserContext* browser_context =
       ShellContentBrowserClient::Get()->browser_context();
   is_compositing_test_ =
@@ -618,12 +620,10 @@ void BlinkTestController::HandleNewRenderFrameHost(RenderFrameHost* frame) {
     params.initial_size = initial_size_;
 
     if (did_send_initial_test_configuration_) {
-      frame->Send(new ShellViewMsg_ReplicateTestConfiguration(
-          frame->GetRoutingID(), params));
+      GetLayoutTestControlPtr(frame)->ReplicateTestConfiguration(params);
     } else {
       did_send_initial_test_configuration_ = true;
-      frame->Send(
-          new ShellViewMsg_SetTestConfiguration(frame->GetRoutingID(), params));
+      GetLayoutTestControlPtr(frame)->SetTestConfiguration(params);
     }
   }
 
@@ -633,8 +633,7 @@ void BlinkTestController::HandleNewRenderFrameHost(RenderFrameHost* frame) {
     all_observed_render_process_hosts_.insert(process);
 
     if (!main_window) {
-      frame->Send(
-          new ShellViewMsg_SetupSecondaryRenderer(frame->GetRoutingID()));
+      GetLayoutTestControlPtr(frame)->SetupSecondaryRenderer();
     }
 
     process->Send(new LayoutTestMsg_ReplicateLayoutTestRuntimeFlagsChanges(
@@ -705,8 +704,16 @@ void BlinkTestController::OnTextDump(const std::string& dump) {
 }
 
 void BlinkTestController::OnInitiateLayoutDump() {
-  pending_layout_dumps_ = main_window_->web_contents()->SendToAllFrames(
-      new ShellViewMsg_LayoutDumpRequest(MSG_ROUTING_NONE));
+  int number_of_messages = 0;
+  for (RenderFrameHost* rfh : main_window_->web_contents()->GetAllFrames()) {
+    if (!rfh->IsRenderFrameLive())
+      continue;
+
+    ++number_of_messages;
+    GetLayoutTestControlPtr(rfh)->LayoutDumpRequest();
+  }
+
+  pending_layout_dumps_ = number_of_messages;
 }
 
 void BlinkTestController::OnLayoutTestRuntimeFlagsChanged(
@@ -954,4 +961,13 @@ void BlinkTestController::OnSendBluetoothManualChooserEvent(
   bluetooth_chooser_factory_->SendEvent(event, argument);
 }
 
+mojom::LayoutTestControl* BlinkTestController::GetLayoutTestControlPtr(
+    RenderFrameHost* frame) {
+  if (layout_test_control_map_.find(frame) == layout_test_control_map_.end()) {
+    frame->GetRemoteAssociatedInterfaces()
+        ->GetInterface(&layout_test_control_map_[frame]);
+  }
+  return layout_test_control_map_[frame].get();
+}
+
 }  // namespace content