FrameTestHelpers: support Settings-parameterized tests.

third_party/WebKit/Source/web/tests/FrameTestHelpers.h

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 36 matching lines @@
 #include <memory>
 #include <string>
 
 namespace blink {
 
 class WebFrame;
 class WebFrameWidget;
 class WebLocalFrame;
 class WebRemoteFrame;
 class WebRemoteFrameImpl;
+class WebSettings;
 enum class WebCachePolicy;
 
 namespace FrameTestHelpers {
 
 class TestWebFrameClient;
 class TestWebWidgetClient;
 class TestWebViewClient;
 
 // Loads a url into the specified WebFrame for testing purposes. Pumps any
 // pending resource requests, as well as waiting for the threaded parser to
@@ skipping 12 matching lines @@
 void pumpPendingRequestsForFrameToLoad(WebFrame*);
 
 WebMouseEvent createMouseEvent(WebInputEvent::Type, WebMouseEvent::Button, const IntPoint&, int modifiers);
 
 // Calls WebRemoteFrame::createLocalChild, but with some arguments prefilled
 // with default test values (i.e. with a default |client| or |properties| and/or
 // with a precalculated |uniqueName|).
 WebLocalFrame* createLocalChild(WebRemoteFrame* parent, const WebString& name = WebString(), WebFrameClient* = nullptr, WebWidgetClient* = nullptr, WebFrame* previousSibling = nullptr, const WebFrameOwnerProperties& = WebFrameOwnerProperties());
 WebRemoteFrame* createRemoteChild(WebRemoteFrame* parent, WebRemoteFrameClient*, const WebString& name = WebString());
 
+// Helpers for unit tests with parameterized WebSettings overrides.
+typedef void (*SettingOverrideFunction)(WebSettings*);
+void DefaultSettingOverride(WebSettings*);
+void RootLayerScrollsSettingOverride(WebSettings*);
 class SettingOverrider {
 public:
     virtual void overrideSettings(WebSettings*) = 0;
 };
 
 // Forces to use mocked overlay scrollbars instead of the default native theme scrollbars to avoid
 // crash in Chromium code when it tries to load UI resources that are not available when running
 // blink unit tests, and to ensure consistent layout regardless of differences between scrollbar themes.
 // WebViewHelper includes this, so this is only needed if a test doesn't use WebViewHelper or the test
 // needs a bigger scope of mock scrollbar settings than the scope of WebViewHelper.
@@ skipping 137 matching lines @@
         WebDOMMessageEvent) override { }
 
 private:
     Persistent<WebRemoteFrameImpl> const m_frame;
 };
 
 } // namespace FrameTestHelpers
 } // namespace blink
 
 #endif // FrameTestHelpers_h