Made layout viewport scroll updates from compositor work like ordinary layers.

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

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/frame/VisualViewport.h"
 
 #include "core/dom/Document.h"
 #include "core/frame/FrameHost.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/LocalFrame.h"
@@ skipping 506 matching lines @@
     RuntimeEnabledFeatures::setFractionalScrollOffsetsEnabled(true);
 
     initializeWithAndroidSettings();
     webViewImpl()->resize(IntSize(200, 250));
 
     registerMockedHttpURLLoad("200-by-800-viewport.html");
     navigateTo(m_baseURL + "200-by-800-viewport.html");
 
     FrameView& frameView = *webViewImpl()->mainFrameImpl()->frameView();
     frameView.layoutViewportScrollableArea()->setScrollPosition(DoublePoint(0, 10.5), ProgrammaticScroll);
-    webViewImpl()->applyViewportDeltas(WebFloatSize(), WebFloatSize(10, 20), WebFloatSize(), 1, 0);
+    frameView.layoutViewportScrollableArea()->ScrollableArea::setScrollPosition(
+        DoublePoint(10, 30.5), CompositorScroll);
 
     EXPECT_EQ(30.5, frameView.layoutViewportScrollableArea()->scrollPositionDouble().y());
 
     RuntimeEnabledFeatures::setFractionalScrollOffsetsEnabled(origFractionalOffsetsEnabled);
 }
 
 // Test that the viewport's scroll offset is always appropriately bounded such that the
 // visual viewport always stays within the bounds of the main frame.
 TEST_P(ParameterizedVisualViewportTest, TestOffsetClamping)
 {
@@ skipping 631 matching lines @@
 
     // Both viewports with a 0.5 fraction.
     webViewImpl()->setVisualViewportOffset(WebFloatPoint(250.5f, 100.5f));
     layoutViewportScrollableArea->setScrollPosition(DoublePoint(0, 900.5), ProgrammaticScroll);
     inputBox->scrollIntoViewIfNeeded(false);
 
     EXPECT_POINT_EQ(DoublePoint(0, 900), layoutViewportScrollableArea->scrollPositionDouble());
     EXPECT_POINT_EQ(FloatPoint(250.5f, 100.5f), visualViewport.location());
 }
 
-// Top controls can make an unscrollable page temporarily scrollable, causing
-// a scroll clamp when the page is resized. Make sure this bug is fixed.
-// crbug.com/437620
-TEST_F(VisualViewportTest, TestResizeDoesntChangeScrollOffset)
-{
-    RuntimeEnabledFeatures::setInertTopControlsEnabled(false);
-    initializeWithAndroidSettings();
-    webViewImpl()->resizeWithTopControls(IntSize(980, 650), 20, false);
-
-    navigateTo("about:blank");
-
-    VisualViewport& visualViewport = frame()->page()->frameHost().visualViewport();
-    FrameView& frameView = *webViewImpl()->mainFrameImpl()->frameView();
-
-    // Outer viewport isn't scrollable
-    EXPECT_SIZE_EQ(IntSize(980, 650), frameView.visibleContentRect().size());
-
-    visualViewport.setScale(2);
-    visualViewport.move(FloatPoint(0, 40));
-
-    // Simulate bringing down the top controls by 20px but counterscrolling the outer viewport.
-    webViewImpl()->applyViewportDeltas(WebFloatSize(), WebFloatSize(0, 20), WebFloatSize(), 1, 1);
-
-    EXPECT_EQ(20, frameView.layoutViewportScrollableArea()->scrollPosition().y());
-
-    webViewImpl()->resizeWithTopControls(WebSize(980, 630), 20, true);
-
-    EXPECT_EQ(0, frameView.layoutViewportScrollableArea()->scrollPosition().y());
-    EXPECT_EQ(60, visualViewport.location().y());
-}
-
 static IntPoint expectedMaxFrameViewScrollOffset(VisualViewport& visualViewport, FrameView& frameView)
 {
     float aspectRatio = visualViewport.visibleRect().width() / visualViewport.visibleRect().height();
     float newHeight = frameView.frameRect().width() / aspectRatio;
     return IntPoint(
         frameView.contentsSize().width() - frameView.frameRect().width(),
         frameView.contentsSize().height() - newHeight);
 }
 
 TEST_F(VisualViewportTest, TestTopControlsAdjustment)
@@ skipping 639 matching lines @@
     webViewImpl()->handleInputEvent(pinchUpdate);
 
     VisualViewport& visualViewport = webViewImpl()->page()->frameHost().visualViewport();
     FrameView& frameView = *webViewImpl()->mainFrameImpl()->frameView();
 
     EXPECT_FLOAT_POINT_EQ(FloatPoint(50, 50), visualViewport.location());
     EXPECT_FLOAT_POINT_EQ(FloatPoint(0, 0), frameView.scrollPositionDouble());
 }
 
 } // namespace