Change JS parameter to camel case.

chrome/browser/extensions/api/tabs/tabs_test.cc

Index: chrome/browser/extensions/api/tabs/tabs_test.cc
diff --git a/chrome/browser/extensions/api/tabs/tabs_test.cc b/chrome/browser/extensions/api/tabs/tabs_test.cc
index f2f3aa3ca189f54cc7d5f1ae3c4c136785bb9d45..dd976c500df4cc8b735553be53cc53a53747b98f 100644
--- a/chrome/browser/extensions/api/tabs/tabs_test.cc
+++ b/chrome/browser/extensions/api/tabs/tabs_test.cc
@@ -792,7 +792,7 @@ testing::AssertionResult ExtensionTabsZoomTest::RunGetDefaultZoom(
   if (!get_zoom_settings_result)
     return testing::AssertionFailure() << "no result";
 
-  if (!get_zoom_settings_result->GetDouble("default_zoom_factor",
+  if (!get_zoom_settings_result->GetDouble("defaultZoomFactor",
                                            default_zoom_factor)) {
     return testing::AssertionFailure()
            << "default zoom factor not found in result";