[rendertext,i18n] Added flag to force RTL rendering

base/i18n/base_i18n_switches.cc

Index: base/i18n/base_i18n_switches.cc
diff --git a/base/i18n/base_i18n_switches.cc b/base/i18n/base_i18n_switches.cc
index 44e8393baab0b90c6e8bc53180d21482d6f09d5e..b8d81963d3110dde8ce1f8727c380cab0b4c8644 100644
--- a/base/i18n/base_i18n_switches.cc
+++ b/base/i18n/base_i18n_switches.cc
@@ -10,6 +10,11 @@ namespace switches {
 // and "rtl" (right-to-left).
 const char kForceUIDirection[]              = "force-ui-direction";
 
+// Force the text rendering to a specific direction. Valid values are "ltr"
+// (left-to-right) and "rtl" (right-to-left). Only tested meaningfully with
+// RTL.
+const char kForceTextDirection[]            = "force-text-direction";
+
 const char kForceUIDirectionLTR[]           = "ltr";
 const char kForceUIDirectionRTL[]           = "rtl";