Revert of Replace IPC messages in layout_test_render_frame_observer.

content/shell/renderer/layout_test/blink_test_runner.cc

Index: content/shell/renderer/layout_test/blink_test_runner.cc
diff --git a/content/shell/renderer/layout_test/blink_test_runner.cc b/content/shell/renderer/layout_test/blink_test_runner.cc
index 05f44c88e91f21b051a081f162264079a662309f..881cfb73d76f3701922af2e1245b086ed4fd51c5 100644
--- a/content/shell/renderer/layout_test/blink_test_runner.cc
+++ b/content/shell/renderer/layout_test/blink_test_runner.cc
@@ -332,7 +332,7 @@
   base::FilePath path = base::FilePath::FromUTF8Unsafe(utf8_path);
   if (!path.IsAbsolute()) {
     GURL base_url =
-        net::FilePathToFileURL(test_config_->current_working_directory.Append(
+        net::FilePathToFileURL(test_config_.current_working_directory.Append(
             FILE_PATH_LITERAL("foo")));
     net::FileURLToFilePath(base_url.Resolve(utf8_path), &path);
   }
@@ -563,7 +563,7 @@
 #if defined(OS_WIN)
   if (base::StartsWith(resource, "/tmp/", base::CompareCase::SENSITIVE)) {
     // We want a temp file.
-    GURL base_url = net::FilePathToFileURL(test_config_->temp_path);
+    GURL base_url = net::FilePathToFileURL(test_config_.temp_path);
     return base_url.Resolve(resource.substr(sizeof("/tmp/") - 1)).spec();
   }
 #endif
@@ -643,7 +643,7 @@
 }
 
 bool BlinkTestRunner::AllowExternalPages() {
-  return test_config_->allow_external_pages;
+  return test_config_.allow_external_pages;
 }
 
 std::string BlinkTestRunner::DumpHistoryForWindow(blink::WebView* web_view) {
@@ -891,7 +891,7 @@
 void BlinkTestRunner::CaptureDumpContinued() {
   test_runner::WebTestInterfaces* interfaces =
       LayoutTestRenderThreadObserver::GetInstance()->test_interfaces();
-  if (test_config_->enable_pixel_dumping &&
+  if (test_config_.enable_pixel_dumping &&
       interfaces->TestRunner()->ShouldGeneratePixelResults() &&
       !interfaces->TestRunner()->ShouldDumpAsAudio()) {
     CHECK(render_view()->GetWebView()->isAcceleratedCompositingActive());
@@ -918,7 +918,7 @@
   base::MD5Sum(snapshot.getPixels(), snapshot.getSize(), &digest);
   std::string actual_pixel_hash = base::MD5DigestToBase16(digest);
 
-  if (actual_pixel_hash == test_config_->expected_pixel_hash) {
+  if (actual_pixel_hash == test_config_.expected_pixel_hash) {
     SkBitmap empty_image;
     Send(new ShellViewHostMsg_ImageDump(
         routing_id(), actual_pixel_hash, empty_image));
@@ -956,28 +956,27 @@
 }
 
 void BlinkTestRunner::OnReplicateTestConfiguration(
-    mojom::ShellTestConfigurationPtr params) {
+    const ShellTestConfiguration& params) {
   test_runner::WebTestInterfaces* interfaces =
       LayoutTestRenderThreadObserver::GetInstance()->test_interfaces();
 
-  test_config_ = params.Clone();
+  test_config_ = params;
 
   is_main_window_ = true;
   interfaces->SetMainView(render_view()->GetWebView());
 
   interfaces->SetTestIsRunning(true);
-  interfaces->ConfigureForTestWithURL(params->test_url,
-                                      params->enable_pixel_dumping);
+  interfaces->ConfigureForTestWithURL(params.test_url,
+                                      params.enable_pixel_dumping);
 }
 
 void BlinkTestRunner::OnSetTestConfiguration(
-    mojom::ShellTestConfigurationPtr params) {
-  mojom::ShellTestConfigurationPtr local_params = params.Clone();
-  OnReplicateTestConfiguration(std::move(params));
-
-  ForceResizeRenderView(render_view(),
-                        WebSize(local_params->initial_size.width(),
-                                local_params->initial_size.height()));
+    const ShellTestConfiguration& params) {
+  OnReplicateTestConfiguration(params);
+
+  ForceResizeRenderView(
+      render_view(),
+      WebSize(params.initial_size.width(), params.initial_size.height()));
   LayoutTestRenderThreadObserver::GetInstance()
       ->test_interfaces()
       ->TestRunner()