Add a --enable-gesture-typing flag. Currently this flag does nothing.

ui/keyboard/keyboard_util.cc

Index: ui/keyboard/keyboard_util.cc
diff --git a/ui/keyboard/keyboard_util.cc b/ui/keyboard/keyboard_util.cc
index 8a67e54260814d88f1b051577a67d8ac66b74f6f..3c126c3e638b4dab3e18ba83fcff3e5c262a6aae 100644
--- a/ui/keyboard/keyboard_util.cc
+++ b/ui/keyboard/keyboard_util.cc
@@ -154,11 +154,13 @@ bool IsInputViewEnabled() {
 }
 
 bool IsExperimentalInputViewEnabled() {
-  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kEnableExperimentalInputViewFeatures)) {
-    return true;
-  }
-  return false;
+  return base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kEnableExperimentalInputViewFeatures);
+}
+
+bool IsGestureTypingEnabled() {
+  return base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kEnableGestureTyping);
 }
 
 bool InsertText(const base::string16& text) {