Make showing the page title in a custom tab a dev option

chrome/android/java/src/org/chromium/chrome/browser/toolbar/ToolbarManager.java

Index: chrome/android/java/src/org/chromium/chrome/browser/toolbar/ToolbarManager.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/toolbar/ToolbarManager.java b/chrome/android/java/src/org/chromium/chrome/browser/toolbar/ToolbarManager.java
index d7cc1f393fc5e809b56f9ba100e8998d505e6172..38654cecb01939fe8f46ddbf647917cd6b4ab5c8 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/toolbar/ToolbarManager.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/toolbar/ToolbarManager.java
@@ -797,6 +797,14 @@ public class ToolbarManager implements ToolbarTabController, UrlFocusChangeListe
     }
 
     /**
+     * Sets whether a title should be shown within the Toolbar.
+     * @param showTitle Whether a title should be shown.
+     */
+    public void setShowTitle(boolean showTitle) {
+        mLocationBar.setShowTitle(showTitle);
+    }
+
+    /**
      * Focuses or unfocuses the URL bar.
      * @param focused Whether URL bar should be focused.
      */