Expose distiller functions to JavaScript

content/public/test/browser_test_utils.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_PUBLIC_TEST_BROWSER_TEST_UTILS_H_
 #define CONTENT_PUBLIC_TEST_BROWSER_TEST_UTILS_H_
 
 #include <queue>
 #include <string>
 #include <vector>
@@ skipping 172 matching lines @@
 // The following methods executes the passed |script| in the specified frame and
 // sets |result| to the value passed to "window.domAutomationController.send" by
 // the executed script. They return true on success, false if the script
 // execution failed or did not evaluate to the expected type.
 bool ExecuteScriptAndExtractInt(const ToRenderFrameHost& adapter,
                                 const std::string& script,
                                 int* result) WARN_UNUSED_RESULT;
 bool ExecuteScriptAndExtractBool(const ToRenderFrameHost& adapter,
                                  const std::string& script,
                                  bool* result) WARN_UNUSED_RESULT;
+bool ExecuteScriptInIsolatedWorldAndExtractBool(

[nyquist, 2015/08/19 10:59:54]

Should this be listed below the non-isolated world ones? Also; should this have
an extra comment about the isolated world stuff?

+    const ToRenderFrameHost& adapter,
+    const int world_id,
+    const std::string& script,
+    bool* result) WARN_UNUSED_RESULT;
 bool ExecuteScriptAndExtractString(const ToRenderFrameHost& adapter,
                                    const std::string& script,
                                    std::string* result) WARN_UNUSED_RESULT;
 
 // Walks the frame tree of the specified WebContents and returns the sole frame
 // that matches the specified predicate function. This function will DCHECK if
 // no frames match the specified predicate, or if more than one frame matches.
 RenderFrameHost* FrameMatchingPredicate(
     WebContents* web_contents,
     const base::Callback<bool(RenderFrameHost*)>& predicate);
@@ skipping 207 matching lines @@
 
   int frames_to_wait_;
   base::Closure quit_;
 
   DISALLOW_COPY_AND_ASSIGN(FrameWatcher);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_TEST_BROWSER_TEST_UTILS_H_