Revert of Change minimum length of Aura overlay scrollbars.

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

 // Copyright 2016 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/FrameView.h"
 #include "core/layout/LayoutView.h"
 #include "core/paint/PaintLayerScrollableArea.h"
 #include "platform/testing/RuntimeEnabledFeaturesTestHelpers.h"
-#include "platform/testing/TestingPlatformSupport.h"
 #include "platform/testing/UnitTestHelpers.h"
-#include "public/platform/WebThemeEngine.h"
 #include "public/web/WebScriptSource.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "web/WebLocalFrameImpl.h"
 #include "web/tests/sim/SimDisplayItemList.h"
 #include "web/tests/sim/SimRequest.h"
 #include "web/tests/sim/SimTest.h"
 
 namespace blink {
 
 namespace {
@@ skipping 16 matching lines @@
 
   // Forces recalc of LayoutView's computed style in Document::updateStyle,
   // without invalidating layout.
   mainFrame().executeScriptAndReturnValue(WebScriptSource(
       "document.querySelector('style').sheet.insertRule('body {}', 1);"));
 
   compositor().beginFrame();
   ASSERT_TRUE(plsa->verticalScrollbar() && plsa->horizontalScrollbar());
 }
 
-typedef bool TestParamOverlayScrollbar;
-class ScrollbarAppearanceTest
-    : public SimTest,
-      public ::testing::WithParamInterface<TestParamOverlayScrollbar> {
- public:
-  // Use real scrollbars to ensure we're testing the real ScrollbarThemes.
-  ScrollbarAppearanceTest() : m_mockScrollbars(false, GetParam()) {}
-
- private:
-  FrameTestHelpers::UseMockScrollbarSettings m_mockScrollbars;
-};
-
-class StubWebThemeEngine : public WebThemeEngine {
- public:
-  WebSize getSize(Part part) override {
-    switch (part) {
-      case PartScrollbarHorizontalThumb:
-        return blink::WebSize(kMinimumHorizontalLength, 15);
-      case PartScrollbarVerticalThumb:
-        return blink::WebSize(15, kMinimumVerticalLength);
-      default:
-        return WebSize();
-    }
-  }
-  static constexpr int kMinimumHorizontalLength = 51;
-  static constexpr int kMinimumVerticalLength = 52;
-};
-
-constexpr int StubWebThemeEngine::kMinimumHorizontalLength;
-constexpr int StubWebThemeEngine::kMinimumVerticalLength;
-
-class ScrollbarTestingPlatformSupport : public TestingPlatformSupport {
- public:
-  WebThemeEngine* themeEngine() override { return &m_stubThemeEngine; }
-
- private:
-  StubWebThemeEngine m_stubThemeEngine;
-};
-
-// Test both overlay and non-overlay scrollbars.
-INSTANTIATE_TEST_CASE_P(All, ScrollbarAppearanceTest, ::testing::Bool());
-
-#if !OS(MACOSX)
-// Ensure that the minimum length for a scrollbar thumb comes from the
-// WebThemeEngine. Note, Mac scrollbars differ from all other platforms so this
-// test doesn't apply there. https://crbug.com/682209.
-TEST_P(ScrollbarAppearanceTest, ThemeEngineDefinesMinimumThumbLength) {
-  ScopedTestingPlatformSupport<ScrollbarTestingPlatformSupport> platform;
-
-  v8::HandleScope handleScope(v8::Isolate::GetCurrent());
-  webView().resize(WebSize(800, 600));
-  SimRequest request("https://example.com/test.html", "text/html");
-  loadURL("https://example.com/test.html");
-  request.complete(
-      "<style> body { width: 1000000px; height: 1000000px; } </style>");
-  ScrollableArea* scrollableArea =
-      document().view()->layoutViewportScrollableArea();
-
-  compositor().beginFrame();
-  ASSERT_TRUE(scrollableArea->verticalScrollbar());
-  ASSERT_TRUE(scrollableArea->horizontalScrollbar());
-
-  ScrollbarTheme& theme = scrollableArea->verticalScrollbar()->theme();
-  EXPECT_EQ(StubWebThemeEngine::kMinimumHorizontalLength,
-            theme.thumbLength(*scrollableArea->horizontalScrollbar()));
-  EXPECT_EQ(StubWebThemeEngine::kMinimumVerticalLength,
-            theme.thumbLength(*scrollableArea->verticalScrollbar()));
-}
-#endif
-
 }  // namespace
 
 }  // namespace blink