Opt-in stripping of line numbers from console messages of layout tests.

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 cf41203f1ffe0ada8dd76989f7c8387154cd1e84..3790ade8591a06682bc11ad56b0a29918e721084 100644
--- a/components/test_runner/test_runner.cc
+++ b/components/test_runner/test_runner.cc
@@ -254,6 +254,7 @@ class TestRunnerBindings : public gin::Wrappable<TestRunnerBindings> {
   void ShowWebInspector(gin::Arguments* args);
   void SimulateWebNotificationClick(const std::string& title, int action_index);
   void SimulateWebNotificationClose(const std::string& title, bool by_user);
+  void StripLineNumbersFromConsoleMessages();
   void UseUnfortunateSynchronousResizeMode();
   void WaitForPolicyDelegate();
   void WaitUntilDone();
@@ -571,6 +572,8 @@ gin::ObjectTemplateBuilder TestRunnerBindings::GetObjectTemplateBuilder(
       .SetMethod("setWindowIsKey", &TestRunnerBindings::SetWindowIsKey)
       .SetMethod("setXSSAuditorEnabled",
                  &TestRunnerBindings::SetXSSAuditorEnabled)
+      .SetMethod("stripLineNumbersFromConsoleMessages",
+                 &TestRunnerBindings::StripLineNumbersFromConsoleMessages)
       .SetMethod("showWebInspector", &TestRunnerBindings::ShowWebInspector)
       .SetMethod("simulateWebNotificationClick",
                  &TestRunnerBindings::SimulateWebNotificationClick)
@@ -1199,6 +1202,11 @@ void TestRunnerBindings::SetUseMockTheme(bool use) {
     runner_->SetUseMockTheme(use);
 }
 
+void TestRunnerBindings::StripLineNumbersFromConsoleMessages() {
+  if (runner_)
+    runner_->StripLineNumbersFromConsoleMessages();
+}
+
 void TestRunnerBindings::WaitUntilExternalURLLoad() {
   if (runner_)
     runner_->WaitUntilExternalURLLoad();
@@ -1828,6 +1836,10 @@ bool TestRunner::shouldWaitUntilExternalURLLoad() const {
   return layout_test_runtime_flags_.wait_until_external_url_load();
 }
 
+bool TestRunner::shouldDumpConsoleLineNumbers() const {
+  return layout_test_runtime_flags_.include_line_numbers_in_console_messages();
+}
+
 const std::set<std::string>* TestRunner::httpHeadersToClear() const {
   return &http_headers_to_clear_;
 }
@@ -2562,6 +2574,12 @@ void TestRunner::WaitUntilExternalURLLoad() {
   OnLayoutTestRuntimeFlagsChanged();
 }
 
+void TestRunner::StripLineNumbersFromConsoleMessages() {
+  layout_test_runtime_flags_.set_include_line_numbers_in_console_messages(
+      false);
+  OnLayoutTestRuntimeFlagsChanged();
+}
+
 void TestRunner::DumpDragImage() {
   layout_test_runtime_flags_.set_dump_drag_image(true);
   DumpAsTextWithPixelResults();