replace redundant toString calls

Author: iampopovich

java/src/org/openqa/selenium/By.java

@@ -121,7 +121,7 @@ public static By cssSelector(String cssSelector) {
   public WebElement findElement(SearchContext context) {
     List<WebElement> allElements = findElements(context);
     if (allElements == null || allElements.isEmpty()) {
-      throw new NoSuchElementException("Cannot locate an element using " + toString());
+      throw new NoSuchElementException("Cannot locate an element using " + this);
     }
     return allElements.get(0);
   }

java/src/org/openqa/selenium/support/pagefactory/ByAll.java

@@ -54,7 +54,7 @@ public WebElement findElement(SearchContext context) {
         return elements.get(0);
       }
     }
-    throw new NoSuchElementException("Cannot locate an element using " + toString());
+    throw new NoSuchElementException("Cannot locate an element using " + this);
   }
 
   @Override

java/src/org/openqa/selenium/support/pagefactory/ByChained.java

@@ -52,7 +52,7 @@ public ByChained(By... bys) {
   public WebElement findElement(SearchContext context) {
     List<WebElement> elements = findElements(context);
     if (elements.isEmpty())
-      throw new NoSuchElementException("Cannot locate an element using " + toString());
+      throw new NoSuchElementException("Cannot locate an element using " + this);
     return elements.get(0);
   }