Preparation for enabling slimming paint synchronized painting

third_party/WebKit/Source/web/tests/ImeOnFocusTest.cpp

Index: third_party/WebKit/Source/web/tests/ImeOnFocusTest.cpp
diff --git a/third_party/WebKit/Source/web/tests/ImeOnFocusTest.cpp b/third_party/WebKit/Source/web/tests/ImeOnFocusTest.cpp
index 8f8dd26552d99110229a4d9867509040f42126ed..f78c2d74554c7cc3bb5e3fc23afca485450ac39c 100644
--- a/third_party/WebKit/Source/web/tests/ImeOnFocusTest.cpp
+++ b/third_party/WebKit/Source/web/tests/ImeOnFocusTest.cpp
@@ -71,6 +71,7 @@ protected:
     std::string m_baseURL;
     FrameTestHelpers::WebViewHelper m_webViewHelper;
     RefPtrWillBePersistent<Document> m_document;
+    FrameTestHelpers::UseMockScrollbarSettings m_mockScrollbarSettings;

[chrishtr, 2015/10/28 21:12:58]

What are all these scrollbar settings diffs?

[Xianzhu, 2015/10/29 04:22:01]

This is to let the tests paint scrollbars using the mock theme instead of the
native theme.

The native theme is implemented at chromium side. It requires some resources
that are not initialized or not available for webkit tests and will crash.

Before sync painting, the tests didn't trigger paint and the problem.

[chrishtr, 2015/10/29 20:22:46]

I see. You should tell schenney@ about that since he is investigating getting
rid of the mock theme, but it seems this is a reason to keep it.

 };
 
 void ImeOnFocusTest::sendGestureTap(WebView* webView, IntPoint clientPoint)