Send screenshots back to the client for debugging

chrome/test/webdriver/commands/find_element_commands.cc

Index: chrome/test/webdriver/commands/find_element_commands.cc
diff --git a/chrome/test/webdriver/commands/find_element_commands.cc b/chrome/test/webdriver/commands/find_element_commands.cc
index 6ee01e662efcec20dcbccc07d2e47a95b2a39128..be830d752d49dde998c3f05b9ced822495bfe030 100644
--- a/chrome/test/webdriver/commands/find_element_commands.cc
+++ b/chrome/test/webdriver/commands/find_element_commands.cc
@@ -111,8 +111,10 @@ void FindElementCommand::ExecutePost(Response* const response) {
              (result->GetType() == Value::TYPE_LIST &&
              static_cast<ListValue*>(result)->GetSize() > 0);
     } else if (error != kNoSuchElement) {
-      SET_WEBDRIVER_ERROR(response, "Internal error in find_element atom",
-                          kInternalServerError);
+      SET_WEBDRIVER_SCREENSHOT_ERROR(response,
+                                     session_,
+                                     "Internal error in find_element atom",
+                                     kInternalServerError);
       return;
     }