Convert main-thread overscroll parameters into viewport space.

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

 /*
  * Copyright (C) 2010 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 8232 matching lines @@
 
 TEST_P(WebFrameOverscrollTest, ScaledPageRootLayerOverscrolled)
 {
     OverscrollWebViewClient client;
     registerMockedHttpURLLoad("overscroll/overscroll.html");
     FrameTestHelpers::WebViewHelper webViewHelper;
     WebViewImpl* webViewImpl = webViewHelper.initializeAndLoad(m_baseURL + "overscroll/overscroll.html", true, 0, &client, configureAndroid);
     webViewHelper.resize(WebSize(200, 200));
     webViewImpl->setPageScaleFactor(3.0);
 
-    // Calculation of accumulatedRootOverscroll and unusedDelta on scaled page.
+    // Calculation of accumulatedRootOverscroll and unusedDelta on scaled page. The point is (99, 99) because we clamp
+    // in the division by 3 to 33 so when we go back to viewport coordinates it becomes (99, 99).
     ScrollBegin(&webViewHelper);
-    EXPECT_CALL(client, didOverscroll(WebFloatSize(0, -10), WebFloatSize(0, -10), WebFloatPoint(33, 33), WebFloatSize()));
+    EXPECT_CALL(client, didOverscroll(WebFloatSize(0, -30), WebFloatSize(0, -30), WebFloatPoint(99, 99), WebFloatSize()));
     ScrollUpdate(&webViewHelper, 0, 30);
     Mock::VerifyAndClearExpectations(&client);
 
-    EXPECT_CALL(client, didOverscroll(WebFloatSize(0, -10), WebFloatSize(0, -20), WebFloatPoint(33, 33), WebFloatSize()));
+    EXPECT_CALL(client, didOverscroll(WebFloatSize(0, -30), WebFloatSize(0, -60), WebFloatPoint(99, 99), WebFloatSize()));
     ScrollUpdate(&webViewHelper, 0, 30);
     Mock::VerifyAndClearExpectations(&client);
 
-    EXPECT_CALL(client, didOverscroll(WebFloatSize(-10, -10), WebFloatSize(-10, -30), WebFloatPoint(33, 33), WebFloatSize()));
+    EXPECT_CALL(client, didOverscroll(WebFloatSize(-30, -30), WebFloatSize(-30, -90), WebFloatPoint(99, 99), WebFloatSize()));
     ScrollUpdate(&webViewHelper, 30, 30);
     Mock::VerifyAndClearExpectations(&client);
 
-    EXPECT_CALL(client, didOverscroll(WebFloatSize(-10, 0), WebFloatSize(-20, -30), WebFloatPoint(33, 33), WebFloatSize()));
+    EXPECT_CALL(client, didOverscroll(WebFloatSize(-30, 0), WebFloatSize(-60, -90), WebFloatPoint(99, 99), WebFloatSize()));
     ScrollUpdate(&webViewHelper, 30, 0);
     Mock::VerifyAndClearExpectations(&client);
 
     // Overscroll is not reported.
     EXPECT_CALL(client, didOverscroll(_, _, _, _)).Times(0);
     ScrollEnd(&webViewHelper);
     Mock::VerifyAndClearExpectations(&client);
 }
 
 TEST_P(WebFrameOverscrollTest, NoOverscrollForSmallvalues)
@@ skipping 277 matching lines @@
     WebLocalFrame* mainFrame = helper.webView()->mainFrame()->toWebLocalFrame();
     v8::HandleScope scope(v8::Isolate::GetCurrent());
     mainFrame->executeScript(WebScriptSource("hello = 'world';"));
     FrameTestHelpers::loadFrame(mainFrame, "data:text/html,new page");
     v8::Local<v8::Value> result = mainFrame->executeScriptAndReturnValue(WebScriptSource("hello"));
     ASSERT_TRUE(result->IsString());
     EXPECT_EQ("world", toCoreString(result->ToString(mainFrame->mainWorldScriptContext()).ToLocalChecked()));
 }
 
 } // namespace blink