Revert of Move logic of recording main thread scrolling reasons from cc to blink::ScrollManager

third_party/WebKit/Source/core/input/EventHandlerTest.cpp

 // Copyright 2015 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/input/EventHandler.h"
 
 #include <memory>
-#include "core/dom/ClientRect.h"
 #include "core/dom/Document.h"
 #include "core/dom/Range.h"
 #include "core/editing/Editor.h"
 #include "core/editing/FrameSelection.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/Settings.h"
-#include "core/layout/LayoutBox.h"
 #include "core/loader/EmptyClients.h"
 #include "core/page/AutoscrollController.h"
 #include "core/page/Page.h"
-#include "core/paint/PaintLayerScrollableArea.h"
 #include "core/testing/DummyPageHolder.h"
-#include "platform/scroll/MainThreadScrollingReason.h"
-#include "platform/testing/HistogramTester.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
-#define EXPECT_WHEEL_BUCKET(reason, count)     \
-  histogram_tester.ExpectBucketCount(          \
-      "Renderer4.MainThreadWheelScrollReason", \
-      GetBucketIndex(MainThreadScrollingReason::reason), count);
-
-#define EXPECT_TOUCH_BUCKET(reason, count)       \
-  histogram_tester.ExpectBucketCount(            \
-      "Renderer4.MainThreadGestureScrollReason", \
-      GetBucketIndex(MainThreadScrollingReason::reason), count);
-
-#define EXPECT_WHEEL_TOTAL(count)                                            \
-  histogram_tester.ExpectTotalCount("Renderer4.MainThreadWheelScrollReason", \
-                                    count);
-
-#define EXPECT_TOUCH_TOTAL(count)                                              \
-  histogram_tester.ExpectTotalCount("Renderer4.MainThreadGestureScrollReason", \
-                                    count);
-
 namespace blink {
 
 class EventHandlerTest : public ::testing::Test {
  protected:
   void SetUp() override;
 
   Page& GetPage() const { return dummy_page_holder_->GetPage(); }
   Document& GetDocument() const { return dummy_page_holder_->GetDocument(); }
   FrameSelection& Selection() const {
     return GetDocument().GetFrame()->Selection();
   }
 
   void SetHtmlInnerHTML(const char* html_content);
 
  protected:
   std::unique_ptr<DummyPageHolder> dummy_page_holder_;
 };
 
-class NonCompositedMainThreadScrollingReasonRecordTest
-    : public EventHandlerTest {
- protected:
-  class ScrollBeginEventBuilder : public WebGestureEvent {
-   public:
-    ScrollBeginEventBuilder(IntPoint position,
-                            FloatPoint delta,
-                            WebGestureDevice device)
-        : WebGestureEvent() {
-      type_ = WebInputEvent::kGestureScrollBegin;
-      x = global_x = position.X();
-      y = global_y = position.Y();
-      data.scroll_begin.delta_y_hint = delta.Y();
-      source_device = device;
-      frame_scale_ = 1;
-    }
-  };
-
-  class ScrollUpdateEventBuilder : public WebGestureEvent {
-   public:
-    ScrollUpdateEventBuilder() : WebGestureEvent() {
-      type_ = WebInputEvent::kGestureScrollUpdate;
-      data.scroll_update.delta_x = 0.0f;
-      data.scroll_update.delta_y = 1.0f;
-      data.scroll_update.velocity_x = 0;
-      data.scroll_update.velocity_y = 1;
-      frame_scale_ = 1;
-    }
-  };
-
-  class ScrollEndEventBuilder : public WebGestureEvent {
-   public:
-    ScrollEndEventBuilder() : WebGestureEvent() {
-      type_ = WebInputEvent::kGestureScrollEnd;
-      frame_scale_ = 1;
-    }
-  };
-
-  int GetBucketIndex(uint32_t reason);
-  void Scroll(Element*, const WebGestureDevice);
-};
-
 class TapEventBuilder : public WebGestureEvent {
  public:
   TapEventBuilder(IntPoint position, int tap_count)
       : WebGestureEvent(WebInputEvent::kGestureTap,
                         WebInputEvent::kNoModifiers,
                         TimeTicks::Now().InSeconds()) {
     x = global_x = position.X();
     y = global_y = position.Y();
     source_device = kWebGestureDeviceTouchscreen;
     data.tap.tap_count = tap_count;
@@ skipping 34 matching lines @@
 
 void EventHandlerTest::SetUp() {
   dummy_page_holder_ = DummyPageHolder::Create(IntSize(300, 400));
 }
 
 void EventHandlerTest::SetHtmlInnerHTML(const char* html_content) {
   GetDocument().documentElement()->setInnerHTML(String::FromUTF8(html_content));
   GetDocument().View()->UpdateAllLifecyclePhases();
 }
 
-int NonCompositedMainThreadScrollingReasonRecordTest::GetBucketIndex(
-    uint32_t reason) {
-  int index = 1;
-  while (!(reason & 1)) {
-    reason >>= 1;
-    ++index;
-  }
-  DCHECK_EQ(reason, 1u);
-  return index;
-}
-
-void NonCompositedMainThreadScrollingReasonRecordTest::Scroll(
-    Element* element,
-    const WebGestureDevice device) {
-  DCHECK(element);
-  DCHECK(element->getBoundingClientRect());
-  ClientRect* rect = element->getBoundingClientRect();
-  ScrollBeginEventBuilder scroll_begin(
-      IntPoint(rect->left() + rect->width() / 2,
-               rect->top() + rect->height() / 2),
-      FloatPoint(0.f, 1.f), device);
-  ScrollUpdateEventBuilder scroll_update;
-  ScrollEndEventBuilder scroll_end;
-  GetDocument().GetFrame()->GetEventHandler().HandleGestureEvent(scroll_begin);
-  GetDocument().GetFrame()->GetEventHandler().HandleGestureEvent(scroll_update);
-  GetDocument().GetFrame()->GetEventHandler().HandleGestureEvent(scroll_end);
-}
-
 TEST_F(EventHandlerTest, dragSelectionAfterScroll) {
   SetHtmlInnerHTML(
       "<style> body { margin: 0px; } .upper { width: 300px; height: 400px; }"
       ".lower { margin: 0px; width: 300px; height: 400px; } .line { display: "
       "block; width: 300px; height: 30px; } </style>"
       "<div class='upper'></div>"
       "<div class='lower'>"
       "<span class='line'>Line 1</span><span class='line'>Line 2</span><span "
       "class='line'>Line 3</span><span class='line'>Line 4</span><span "
       "class='line'>Line 5</span>"
@@ skipping 438 matching lines @@
       WebInputEvent::kMouseLeave, WebFloatPoint(0, 0), WebFloatPoint(0, 0),
       WebPointerProperties::Button::kNoButton, 0, WebInputEvent::kNoModifiers,
       TimeTicks::Now().InSeconds());
   mouse_leave_event.SetFrameScale(1);
   GetDocument().GetFrame()->GetEventHandler().HandleMouseLeaveEvent(
       mouse_leave_event);
 
   EXPECT_EQ(WTF::String(), LastToolTip());
 }
 
-TEST_F(NonCompositedMainThreadScrollingReasonRecordTest,
-       TouchAndWheelGeneralTest) {
-  SetHtmlInnerHTML(
-      "<style>"
-      " .box { overflow:scroll; width: 100px; height: 100px; }"
-      " .translucent { opacity: 0.5; }"
-      " .spacer { height: 1000px; }"
-      "</style>"
-      "<div id='box' class='translucent box'>"
-      " <div class='spacer'></div>"
-      "</div>");
-
-  GetDocument().View()->UpdateAllLifecyclePhases();
-
-  Element* box = GetDocument().getElementById("box");
-  HistogramTester histogram_tester;
-
-  // Test touch scroll.
-  Scroll(box, kWebGestureDeviceTouchscreen);
-  EXPECT_TOUCH_BUCKET(kHasOpacityAndLCDText, 1);
-  EXPECT_TOUCH_BUCKET(kBackgroundNotOpaqueInRectAndLCDText, 1);
-
-  Scroll(box, kWebGestureDeviceTouchscreen);
-  EXPECT_TOUCH_BUCKET(kHasOpacityAndLCDText, 2);
-  EXPECT_TOUCH_BUCKET(kBackgroundNotOpaqueInRectAndLCDText, 2);
-  EXPECT_TOUCH_TOTAL(4);
-
-  // Test wheel scroll.
-  Scroll(box, kWebGestureDeviceTouchpad);
-  EXPECT_WHEEL_BUCKET(kHasOpacityAndLCDText, 1);
-  EXPECT_WHEEL_BUCKET(kBackgroundNotOpaqueInRectAndLCDText, 1);
-  EXPECT_WHEEL_TOTAL(2);
-}
-
-TEST_F(NonCompositedMainThreadScrollingReasonRecordTest,
-       CompositedScrollableAreaTest) {
-  SetHtmlInnerHTML(
-      "<style>"
-      " .box { overflow:scroll; width: 100px; height: 100px; }"
-      " .translucent { opacity: 0.5; }"
-      " .composited { will-change: transform; }"
-      " .spacer { height: 1000px; }"
-      "</style>"
-      "<div id='box' class='translucent box'>"
-      " <div class='spacer'></div>"
-      "</div>");
-
-  GetPage().GetSettings().SetAcceleratedCompositingEnabled(true);
-  GetDocument().View()->SetParentVisible(true);
-  GetDocument().View()->SetSelfVisible(true);
-  GetDocument().View()->UpdateAllLifecyclePhases();
-
-  Element* box = GetDocument().getElementById("box");
-  HistogramTester histogram_tester;
-
-  Scroll(box, kWebGestureDeviceTouchpad);
-  EXPECT_WHEEL_BUCKET(kHasOpacityAndLCDText, 1);
-  EXPECT_WHEEL_BUCKET(kBackgroundNotOpaqueInRectAndLCDText, 1);
-  EXPECT_WHEEL_TOTAL(2);
-
-  box->setAttribute("class", "composited translucent box");
-  GetDocument().View()->UpdateAllLifecyclePhases();
-  Scroll(box, kWebGestureDeviceTouchpad);
-  EXPECT_FALSE(ToLayoutBox(box->GetLayoutObject())
-                   ->GetScrollableArea()
-                   ->GetNonCompositedMainThreadScrollingReasons());
-  EXPECT_WHEEL_BUCKET(kHasOpacityAndLCDText, 1);
-  EXPECT_WHEEL_BUCKET(kBackgroundNotOpaqueInRectAndLCDText, 1);
-  EXPECT_WHEEL_TOTAL(2);
-}
-
-TEST_F(NonCompositedMainThreadScrollingReasonRecordTest,
-       NotScrollableAreaTest) {
-  SetHtmlInnerHTML(
-      "<style>.box { overflow:scroll; width: 100px; height: 100px; }"
-      " .translucent { opacity: 0.5; }"
-      " .hidden { overflow: hidden; }"
-      " .spacer { height: 1000px; }"
-      "</style>"
-      "<div id='box' class='translucent box'>"
-      " <div class='spacer'></div>"
-      "</div>");
-
-  GetDocument().View()->UpdateAllLifecyclePhases();
-
-  Element* box = GetDocument().getElementById("box");
-  HistogramTester histogram_tester;
-
-  Scroll(box, kWebGestureDeviceTouchpad);
-  EXPECT_WHEEL_BUCKET(kHasOpacityAndLCDText, 1);
-  EXPECT_WHEEL_BUCKET(kBackgroundNotOpaqueInRectAndLCDText, 1);
-  EXPECT_WHEEL_TOTAL(2);
-
-  box->setAttribute("class", "hidden translucent box");
-  GetDocument().View()->UpdateAllLifecyclePhases();
-  Scroll(box, kWebGestureDeviceTouchpad);
-  EXPECT_WHEEL_BUCKET(kHasOpacityAndLCDText, 1);
-  EXPECT_WHEEL_BUCKET(kBackgroundNotOpaqueInRectAndLCDText, 1);
-  EXPECT_WHEEL_TOTAL(2);
-}
-
-TEST_F(NonCompositedMainThreadScrollingReasonRecordTest, NestedScrollersTest) {
-  SetHtmlInnerHTML(
-      "<style>"
-      " .container { overflow:scroll; width: 200px; height: 200px; }"
-      " .box { overflow:scroll; width: 100px; height: 100px; }"
-      " .translucent { opacity: 0.5; }"
-      " .transform { transform: scale(0.8); }"
-      " .with-border-radius { border: 5px solid; border-radius: 5px; }"
-      " .spacer { height: 1000px; }"
-      " .composited { will-change: transform; }"
-      "</style>"
-      "<div id='container' class='container with-border-radius'>"
-      "  <div class='translucent box'>"
-      "    <div id='inner' class='composited transform box'>"
-      "      <div class='spacer'></div>"
-      "    </div>"
-      "  </div>"
-      "  <div class='spacer'></div>"
-      "</div>");
-
-  GetPage().GetSettings().SetAcceleratedCompositingEnabled(true);
-  GetDocument().View()->SetParentVisible(true);
-  GetDocument().View()->SetSelfVisible(true);
-  GetDocument().View()->UpdateAllLifecyclePhases();
-
-  Element* box = GetDocument().getElementById("inner");
-  HistogramTester histogram_tester;
-
-  Scroll(box, kWebGestureDeviceTouchpad);
-  // Scrolling the inner box will gather reasons from the scrolling chain. The
-  // inner box itself has no reason because it's composited. Other scrollable
-  // areas from the chain have corresponding reasons.
-  EXPECT_WHEEL_BUCKET(kHasOpacityAndLCDText, 1);
-  EXPECT_WHEEL_BUCKET(kBackgroundNotOpaqueInRectAndLCDText, 1);
-  EXPECT_WHEEL_BUCKET(kHasBorderRadius, 1);
-  EXPECT_WHEEL_BUCKET(kHasTransformAndLCDText, 0);
-  EXPECT_WHEEL_TOTAL(3);
-}
-
 }  // namespace blink