Exclude text processing items for insertions and passwords

The CL http://crrev.com/2801873003 introduced regression: it
unconditionally added the text processing menu items to the selection
menu. Originally these items were skipped in case isInsertion() or
isSelectionPassword() returned true.

This CL restores the old behavior.

BUG=714090

Review-Url: https://codereview.chromium.org/2847793003
Cr-Commit-Position: refs/heads/master@{#467808}

content/public/android/java/src/org/chromium/content/browser/SelectionPopupController.java

@@ -455,6 +455,8 @@ public class SelectionPopupController extends ActionModeCallbackHelper {
         mActionMenuDescriptor = createActionMenuDescriptor();
         mActionMenuDescriptor.apply(menu);
 
+        if (isInsertion() || isSelectionPassword()) return;
+
         initializeTextProcessingMenu(menu);
     }