Add webdriver endpoint to send custom debugger commands

chrome/test/chromedriver/chrome/web_view_impl.h

Index: chrome/test/chromedriver/chrome/web_view_impl.h
diff --git a/chrome/test/chromedriver/chrome/web_view_impl.h b/chrome/test/chromedriver/chrome/web_view_impl.h
index cd0fed3de1ae59d60af5911adcbf2966dff5bf3c..7e80da1a8ec54ffe3fd109536852f7e6eabc5d9d 100644
--- a/chrome/test/chromedriver/chrome/web_view_impl.h
+++ b/chrome/test/chromedriver/chrome/web_view_impl.h
@@ -52,6 +52,11 @@ class WebViewImpl : public WebView {
   Status GetUrl(std::string* url) override;
   Status Load(const std::string& url, const Timeout* timeout) override;
   Status Reload(const Timeout* timeout) override;
+  Status SendCommand(const std::string& cmd,
+                     const base::DictionaryValue& params) override;
+  Status SendCommandAndGetResult(const std::string& cmd,
+                                 const base::DictionaryValue& params,
+                                 std::unique_ptr<base::Value>* value) override;
   Status TraverseHistory(int delta, const Timeout* timeout) override;
   Status EvaluateScript(const std::string& frame,
                         const std::string& expression,