Add flag to force complex text for tests

content/shell/browser/shell_content_browser_client.cc

Index: content/shell/browser/shell_content_browser_client.cc
diff --git a/content/shell/browser/shell_content_browser_client.cc b/content/shell/browser/shell_content_browser_client.cc
index 2f928a92d6b18fde6d714d7181ead7a587f13524..c18e4ff5a29dc7728c269797af4bdc3122d89aa9 100644
--- a/content/shell/browser/shell_content_browser_client.cc
+++ b/content/shell/browser/shell_content_browser_client.cc
@@ -230,6 +230,10 @@ void ShellContentBrowserClient::AppendExtraCommandLineSwitches(
     command_line->AppendSwitch(switches::kEnableFontAntialiasing);
   }
   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kAlwaysUseComplexText)) {
+    command_line->AppendSwitch(switches::kAlwaysUseComplexText);
+  }
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kExposeInternalsForTesting)) {
     command_line->AppendSwitch(switches::kExposeInternalsForTesting);
   }