Clean up mojom::Renderer usage in RPH

content/public/test/mock_render_process_host.cc

Index: content/public/test/mock_render_process_host.cc
diff --git a/content/public/test/mock_render_process_host.cc b/content/public/test/mock_render_process_host.cc
index 067b38558ce47c24d8e7200bc10ae6d83fa726dd..2e73507666d6fdf2e77e72fdcfcc8ae1565f02d0 100644
--- a/content/public/test/mock_render_process_host.cc
+++ b/content/public/test/mock_render_process_host.cc
@@ -20,6 +20,7 @@
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/common/child_process_host_impl.h"
 #include "content/common/frame_messages.h"
+#include "content/common/renderer.mojom.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/global_request_id.h"
 #include "content/public/browser/notification_details.h"
@@ -28,6 +29,7 @@
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/render_widget_host_iterator.h"
 #include "content/public/browser/storage_partition.h"
+#include "mojo/public/cpp/bindings/associated_interface_ptr.h"
 
 namespace content {
 
@@ -299,6 +301,14 @@ bool MockRenderProcessHost::IsWorkerRefCountDisabled() {
 
 void MockRenderProcessHost::PurgeAndSuspend() {}
 
+mojom::Renderer* MockRenderProcessHost::GetRendererInterface() {
+  if (!renderer_interface_) {
+    renderer_interface_.reset(new mojom::RendererAssociatedPtr);
+    mojo::GetDummyProxyForTesting(renderer_interface_.get());
+  }
+  return renderer_interface_->get();
+}
+
 void MockRenderProcessHost::FilterURL(bool empty_allowed, GURL* url) {
   RenderProcessHostImpl::FilterURL(this, empty_allowed, url);
 }