Expose distiller functions to JavaScript

content/public/test/browser_test_utils.h

Index: content/public/test/browser_test_utils.h
diff --git a/content/public/test/browser_test_utils.h b/content/public/test/browser_test_utils.h
index f05f4037b4c0980626b8c48ff7d30397a63adcfd..ee1d9038213a32b40c833db54d4096a3f444c986 100644
--- a/content/public/test/browser_test_utils.h
+++ b/content/public/test/browser_test_utils.h
@@ -194,6 +194,14 @@ bool ExecuteScriptAndExtractString(const ToRenderFrameHost& adapter,
                                    const std::string& script,
                                    std::string* result) WARN_UNUSED_RESULT;
 
+// This function behaves similarly to ExecuteScriptAndExtractBool but runs the
+// the script in the specified isolated world.
+bool ExecuteScriptInIsolatedWorldAndExtractBool(
+    const ToRenderFrameHost& adapter,
+    const int world_id,
+    const std::string& script,
+    bool* 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.