Replace flaky test, wrangle with harness/infra

components/test_runner/test_runner.cc

Index: components/test_runner/test_runner.cc
diff --git a/components/test_runner/test_runner.cc b/components/test_runner/test_runner.cc
index 89ea49bdc4b4ee5a320ea9194c2afbc03d73736d..0906f0f374e4722b419e30271ca31f564efe19ab 100644
--- a/components/test_runner/test_runner.cc
+++ b/components/test_runner/test_runner.cc
@@ -137,6 +137,7 @@ class TestRunnerBindings : public gin::Wrappable<TestRunnerBindings> {
   void DumpAsMarkup();
   void DumpAsText();
   void DumpAsTextWithPixelResults();
+  void DumpPixelResults();
   void DumpBackForwardList();
   void DumpChildFrameScrollPositions();
   void DumpChildFramesAsMarkup();
@@ -381,6 +382,7 @@ gin::ObjectTemplateBuilder TestRunnerBindings::GetObjectTemplateBuilder(
       .SetMethod("dumpAsText", &TestRunnerBindings::DumpAsText)
       .SetMethod("dumpAsTextWithPixelResults",
                  &TestRunnerBindings::DumpAsTextWithPixelResults)
+      .SetMethod("dumpPixelResults", &TestRunnerBindings::DumpPixelResults)
       .SetMethod("dumpBackForwardList",
                  &TestRunnerBindings::DumpBackForwardList)
       .SetMethod("dumpChildFrameScrollPositions",
@@ -1079,6 +1081,11 @@ void TestRunnerBindings::DumpAsTextWithPixelResults() {
     runner_->DumpAsTextWithPixelResults();
 }
 
+void TestRunnerBindings::DumpPixelResults() {
+  if (runner_)
+    runner_->DumpPixelResults();
+}
+
 void TestRunnerBindings::DumpChildFrameScrollPositions() {
   if (runner_)
     runner_->DumpChildFrameScrollPositions();
@@ -2440,6 +2447,11 @@ void TestRunner::DumpAsTextWithPixelResults() {
   OnLayoutTestRuntimeFlagsChanged();
 }
 
+void TestRunner::DumpPixelResults() {
+  layout_test_runtime_flags_.set_generate_pixel_results(true);
+  OnLayoutTestRuntimeFlagsChanged();
+}
+
 void TestRunner::DumpChildFrameScrollPositions() {
   layout_test_runtime_flags_.set_dump_child_frame_scroll_positions(true);
   OnLayoutTestRuntimeFlagsChanged();