Add flag to force complex text for tests

content/shell/renderer/layout_test/layout_test_render_process_observer.cc

Index: content/shell/renderer/layout_test/layout_test_render_process_observer.cc
diff --git a/content/shell/renderer/layout_test/layout_test_render_process_observer.cc b/content/shell/renderer/layout_test/layout_test_render_process_observer.cc
index c818b73a869508972cfd04d942aa65180c0fff37..71d29c4dff5be1465270a12e2d6d3267ee167d6c 100644
--- a/content/shell/renderer/layout_test/layout_test_render_process_observer.cc
+++ b/content/shell/renderer/layout_test/layout_test_render_process_observer.cc
@@ -75,7 +75,10 @@ void LayoutTestRenderProcessObserver::WebKitInitialized() {
           switches::kEnableFontAntialiasing)) {
     blink::setFontAntialiasingEnabledForTest(true);
   }
-
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kAlwaysUseComplexText)) {
+    blink::setAlwaysUseComplexTextForTest(true);
+  }
 }
 
 void LayoutTestRenderProcessObserver::OnRenderProcessShutdown() {