Revert of Add ExecuteJavaScriptForTest and make all tests use it

content/public/android/java/src/org/chromium/content_public/browser/WebContents.java

Index: content/public/android/java/src/org/chromium/content_public/browser/WebContents.java
diff --git a/content/public/android/java/src/org/chromium/content_public/browser/WebContents.java b/content/public/android/java/src/org/chromium/content_public/browser/WebContents.java
index 5dad2d6a5848488d5f6b2a65e3bfb5736a56ed8d..5be1f9253d32d5aac42c3c6acece73445272f66b 100644
--- a/content/public/android/java/src/org/chromium/content_public/browser/WebContents.java
+++ b/content/public/android/java/src/org/chromium/content_public/browser/WebContents.java
@@ -218,29 +218,14 @@
      * Injects the passed Javascript code in the current page and evaluates it.
      * If a result is required, pass in a callback.
      *
-     * It is not possible to use this method to evaluate JavaScript on web
-     * content, only on WebUI pages.
-     *
      * @param script The Javascript to execute.
      * @param callback The callback to be fired off when a result is ready. The script's
      *                 result will be json encoded and passed as the parameter, and the call
      *                 will be made on the main thread.
      *                 If no result is required, pass null.
      */
+    @VisibleForTesting
     void evaluateJavaScript(String script, JavaScriptCallback callback);
-
-    /**
-     * Injects the passed Javascript code in the current page and evaluates it.
-     * If a result is required, pass in a callback.
-     *
-     * @param script The Javascript to execute.
-     * @param callback The callback to be fired off when a result is ready. The script's
-     *                 result will be json encoded and passed as the parameter, and the call
-     *                 will be made on the main thread.
-     *                 If no result is required, pass null.
-     */
-    @VisibleForTesting
-    void evaluateJavaScriptForTests(String script, JavaScriptCallback callback);
 
     /**
      * Adds a log message to dev tools console. |level| must be a value of