Reland "[ios] Turn on FullscreenControllerBrowserScoped by default"

This is a reland of 5f4895f5

Original change's description:
> [ios] Turn on FullscreenControllerBrowserScoped by default
>
> Bug: 790886
> Change-Id: Ide1eee5634376b90cfa820bb61644c871969ff86
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2358589
> Reviewed-by: Sergio Collazos <sczs@chromium.org>
> Commit-Queue: Chris Lu <thegreenfrog@chromium.org>
> Auto-Submit: Chris Lu <thegreenfrog@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#800354}

Bug: 790886
Change-Id: I24ea5c47f97e1060dc1c2dd4e83f4447595611b6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2380138
Commit-Queue: Chris Lu <thegreenfrog@chromium.org>
Commit-Queue: Rohit Rao <rohitrao@chromium.org>
Auto-Submit: Chris Lu <thegreenfrog@chromium.org>
Reviewed-by: Rohit Rao <rohitrao@chromium.org>
Cr-Commit-Position: refs/heads/master@{#804959}

ios/chrome/browser/ui/fullscreen/fullscreen_features.mm

@@ -19,7 +19,7 @@ const base::Feature kSmoothScrollingDefault{"FullscreenSmoothScrollingDefault",
                                             base::FEATURE_ENABLED_BY_DEFAULT};
 
 const base::Feature kFullscreenControllerBrowserScoped{
-    "FullscreenControllerBrowserScoped", base::FEATURE_DISABLED_BY_DEFAULT};
+    "FullscreenControllerBrowserScoped", base::FEATURE_ENABLED_BY_DEFAULT};
 
 bool ShouldUseSmoothScrolling() {
   return base::FeatureList::IsEnabled(kSmoothScrollingDefault);

ios/chrome/browser/ui/infobars/BUILD.gn

@@ -137,6 +137,7 @@ source_set("unit_tests") {
     "//ios/chrome/browser/web_state_list",
     "//ios/chrome/browser/web_state_list:test_support",
     "//ios/chrome/test:test_support",
+    "//ios/web/common",
     "//ios/web/public/test/fakes",
     "//testing/gtest",
     "//testing/gtest",

ios/chrome/browser/ui/infobars/infobar_container_coordinator_unittest.mm

@@ -4,6 +4,8 @@
 
 #import "ios/chrome/browser/ui/infobars/infobar_container_coordinator.h"
 
+#import <WebKit/WebKit.h>
+
 #import "base/test/ios/wait_util.h"
 #include "base/test/scoped_feature_list.h"
 #include "base/test/task_environment.h"
@@ -27,8 +29,11 @@
 #import "ios/chrome/browser/web_state_list/web_state_list.h"
 #import "ios/chrome/browser/web_state_list/web_state_opener.h"
 #import "ios/chrome/test/scoped_key_window.h"
+#import "ios/web/common/crw_web_view_content_view.h"
 #import "ios/web/public/test/fakes/test_navigation_manager.h"
 #import "ios/web/public/test/fakes/test_web_state.h"
+#import "ios/web/public/ui/crw_web_view_proxy.h"
+#import "ios/web/public/ui/crw_web_view_scroll_view_proxy.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 #import "third_party/ocmock/OCMock/OCMock.h"
@@ -69,7 +74,13 @@ class InfobarContainerCoordinatorTest : public PlatformTest {
   InfobarContainerCoordinatorTest()
       : browser_(std::make_unique<TestBrowser>()),
         base_view_controller_([[FakeBaseViewController alloc] init]),
-        positioner_([[TestContainerCoordinatorPositioner alloc] init]) {
+        positioner_([[TestContainerCoordinatorPositioner alloc] init]),
+        web_view_([[WKWebView alloc]
+            initWithFrame:scoped_window_.Get().bounds
+            configuration:[[WKWebViewConfiguration alloc] init]]),
+        content_view_([[CRWWebViewContentView alloc]
+            initWithWebView:web_view_
+                 scrollView:web_view_.scrollView]) {
     // Enable kIOSInfobarUIReboot flag.
     feature_list_.InitWithFeatures({kIOSInfobarUIReboot},
                                    {kInfobarUIRebootOnlyiOS13});
@@ -84,6 +95,15 @@ class InfobarContainerCoordinatorTest : public PlatformTest {
     navigation_manager_ = navigation_manager.get();
     web_state->SetNavigationManager(std::move(navigation_manager));
     web_state->SetBrowserState(browser_->GetBrowserState());
+    web_state->SetView(content_view_);
+    CRWWebViewScrollViewProxy* scroll_view_proxy =
+        [[CRWWebViewScrollViewProxy alloc] init];
+    UIScrollView* scroll_view = [[UIScrollView alloc] init];
+    [scroll_view_proxy setScrollView:scroll_view];
+    id web_view_proxy_mock = OCMProtocolMock(@protocol(CRWWebViewProxy));
+    [[[web_view_proxy_mock stub] andReturn:scroll_view_proxy] scrollViewProxy];
+    web_state->SetWebViewProxy(web_view_proxy_mock);
+
     browser_->GetWebStateList()->InsertWebState(0, std::move(web_state),
                                                 WebStateList::INSERT_NO_FLAGS,
                                                 WebStateOpener());
@@ -187,6 +207,14 @@ class InfobarContainerCoordinatorTest : public PlatformTest {
   void AddSecondWebstate() {
     std::unique_ptr<web::TestWebState> second_web_state =
         std::make_unique<web::TestWebState>();
+    second_web_state->SetView(content_view_);
+    CRWWebViewScrollViewProxy* scroll_view_proxy =
+        [[CRWWebViewScrollViewProxy alloc] init];
+    UIScrollView* scroll_view = [[UIScrollView alloc] init];
+    [scroll_view_proxy setScrollView:scroll_view];
+    id web_view_proxy_mock = OCMProtocolMock(@protocol(CRWWebViewProxy));
+    [[[web_view_proxy_mock stub] andReturn:scroll_view_proxy] scrollViewProxy];
+    second_web_state->SetWebViewProxy(web_view_proxy_mock);
     InfoBarManagerImpl::CreateForWebState(second_web_state.get());
     InfobarBadgeTabHelper::CreateForWebState(second_web_state.get());
     browser_->GetWebStateList()->InsertWebState(1, std::move(second_web_state),
@@ -221,6 +249,9 @@ class InfobarContainerCoordinatorTest : public PlatformTest {
   std::unique_ptr<IOSChromeSavePasswordInfoBarDelegate> infobar_delegate_;
   ConfirmInfoBarController* legacy_controller_;
   std::unique_ptr<ConfirmInfoBarDelegate> legacy_infobar_delegate_;
+  ScopedKeyWindow scoped_window_;
+  WKWebView* web_view_ = nil;
+  CRWWebViewContentView* content_view_ = nil;
 };
 
 // Tests infobarBannerState is InfobarBannerPresentationState::Presented once an

ios/chrome/browser/ui/overlays/BUILD.gn

@@ -142,6 +142,7 @@ source_set("unit_tests") {
     "//ios/chrome/browser/ui/overlays/test_modality",
     "//ios/chrome/browser/web_state_list",
     "//ios/chrome/test:test_support",
+    "//ios/web/common",
     "//ios/web/public/test",
     "//ios/web/public/test/fakes",
     "//testing/gmock",

ios/chrome/browser/ui/overlays/overlay_presentation_context_fullscreen_disabler_unittest.mm

@@ -4,6 +4,8 @@
 
 #import "ios/chrome/browser/ui/overlays/overlay_presentation_context_fullscreen_disabler.h"
 
+#import <WebKit/WebKit.h>
+
 #import "ios/chrome/browser/main/test_browser.h"
 #include "ios/chrome/browser/overlays/public/overlay_request.h"
 #include "ios/chrome/browser/overlays/public/overlay_request_queue.h"
@@ -13,9 +15,14 @@
 #import "ios/chrome/browser/ui/fullscreen/fullscreen_features.h"
 #import "ios/chrome/browser/web_state_list/web_state_list.h"
 #import "ios/chrome/browser/web_state_list/web_state_opener.h"
+#import "ios/chrome/test/scoped_key_window.h"
+#import "ios/web/common/crw_web_view_content_view.h"
 #import "ios/web/public/test/fakes/test_web_state.h"
 #include "ios/web/public/test/web_task_environment.h"
+#import "ios/web/public/ui/crw_web_view_proxy.h"
+#import "ios/web/public/ui/crw_web_view_scroll_view_proxy.h"
 #include "testing/platform_test.h"
+#import "third_party/ocmock/OCMock/OCMock.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
@@ -32,14 +39,31 @@ DEFINE_TEST_OVERLAY_REQUEST_CONFIG(kConfig);
 class OverlayPresentationContextFullscreenDisablerTest : public PlatformTest {
  public:
   OverlayPresentationContextFullscreenDisablerTest()
-      : disabler_(&browser_, kModality) {
+      : disabler_(&browser_, kModality),
+        web_view_([[WKWebView alloc]
+            initWithFrame:scoped_window_.Get().bounds
+            configuration:[[WKWebViewConfiguration alloc] init]]),
+        content_view_([[CRWWebViewContentView alloc]
+            initWithWebView:web_view_
+                 scrollView:web_view_.scrollView]) {
     // Set up the fake presentation context so OverlayPresenterObserver
     // callbacks are sent.
     overlay_presenter()->SetPresentationContext(&presentation_context_);
+
+    std::unique_ptr<web::TestWebState> web_state =
+        std::make_unique<web::TestWebState>();
+    web_state->SetView(content_view_);
+    CRWWebViewScrollViewProxy* scroll_view_proxy =
+        [[CRWWebViewScrollViewProxy alloc] init];
+    UIScrollView* scroll_view = [[UIScrollView alloc] init];
+    [scroll_view_proxy setScrollView:scroll_view];
+    id web_view_proxy_mock = OCMProtocolMock(@protocol(CRWWebViewProxy));
+    [[[web_view_proxy_mock stub] andReturn:scroll_view_proxy] scrollViewProxy];
+    web_state->SetWebViewProxy(web_view_proxy_mock);
     // Insert and activate a WebState.
-    browser_.GetWebStateList()->InsertWebState(
-        0, std::make_unique<web::TestWebState>(), WebStateList::INSERT_ACTIVATE,
-        WebStateOpener());
+    browser_.GetWebStateList()->InsertWebState(0, std::move(web_state),
+                                               WebStateList::INSERT_ACTIVATE,
+                                               WebStateOpener());
   }
   ~OverlayPresentationContextFullscreenDisablerTest() override {
     overlay_presenter()->SetPresentationContext(nullptr);
@@ -66,6 +90,9 @@ class OverlayPresentationContextFullscreenDisablerTest : public PlatformTest {
   TestBrowser browser_;
   OverlayContainerFullscreenDisabler disabler_;
   FakeOverlayPresentationContext presentation_context_;
+  ScopedKeyWindow scoped_window_;
+  WKWebView* web_view_ = nil;
+  CRWWebViewContentView* content_view_ = nil;
 };
 
 // Tests that OverlayPresentationContextFullscreenDisabler disables fullscreen

ios/chrome/browser/ui/side_swipe/BUILD.gn

@@ -63,6 +63,7 @@ source_set("unit_tests") {
     "//ios/chrome/browser/browser_state:test_support",
     "//ios/chrome/browser/main:test_support",
     "//ios/chrome/browser/web_state_list",
+    "//ios/chrome/test:test_support",
     "//ios/web/common",
     "//ios/web/public/test",
     "//testing/gtest",

ios/chrome/browser/ui/side_swipe/side_swipe_controller_unittest.mm

@@ -4,18 +4,24 @@
 
 #import "ios/chrome/browser/ui/side_swipe/side_swipe_controller.h"
 
+#import <WebKit/WebKit.h>
+
 #include "ios/chrome/browser/browser_state/test_chrome_browser_state.h"
 #include "ios/chrome/browser/chrome_url_constants.h"
 #import "ios/chrome/browser/main/test_browser.h"
 #import "ios/chrome/browser/web_state_list/web_state_list.h"
 #import "ios/chrome/browser/web_state_list/web_state_list_delegate.h"
 #import "ios/chrome/browser/web_state_list/web_state_opener.h"
+#import "ios/chrome/test/scoped_key_window.h"
+#import "ios/web/common/crw_web_view_content_view.h"
 #include "ios/web/common/features.h"
 #import "ios/web/public/navigation/navigation_item.h"
 #import "ios/web/public/test/fakes/fake_navigation_context.h"
 #import "ios/web/public/test/fakes/test_navigation_manager.h"
 #import "ios/web/public/test/fakes/test_web_state.h"
 #include "ios/web/public/test/web_task_environment.h"
+#import "ios/web/public/ui/crw_web_view_proxy.h"
+#import "ios/web/public/ui/crw_web_view_scroll_view_proxy.h"
 #include "testing/platform_test.h"
 #import "third_party/ocmock/OCMock/OCMock.h"
 #import "third_party/ocmock/gtest_support.h"
@@ -40,9 +46,23 @@ class TestWebStateListDelegate : public WebStateListDelegate {
 
 class SideSwipeControllerTest : public PlatformTest {
  public:
-  void SetUp() override {
+  SideSwipeControllerTest()
+      : web_view_([[WKWebView alloc]
+            initWithFrame:scoped_window_.Get().bounds
+            configuration:[[WKWebViewConfiguration alloc] init]]),
+        content_view_([[CRWWebViewContentView alloc]
+            initWithWebView:web_view_
+                 scrollView:web_view_.scrollView]) {
     std::unique_ptr<web::TestWebState> original_web_state(
         std::make_unique<web::TestWebState>());
+    original_web_state->SetView(content_view_);
+    CRWWebViewScrollViewProxy* scroll_view_proxy =
+        [[CRWWebViewScrollViewProxy alloc] init];
+    UIScrollView* scroll_view = [[UIScrollView alloc] init];
+    [scroll_view_proxy setScrollView:scroll_view];
+    id web_view_proxy_mock = OCMProtocolMock(@protocol(CRWWebViewProxy));
+    [[[web_view_proxy_mock stub] andReturn:scroll_view_proxy] scrollViewProxy];
+    original_web_state->SetWebViewProxy(web_view_proxy_mock);
 
     web_state_list_ = std::make_unique<WebStateList>(&web_state_list_delegate_);
     web_state_list_->InsertWebState(0, std::move(original_web_state),
@@ -69,9 +89,11 @@ class SideSwipeControllerTest : public PlatformTest {
   TestWebStateListDelegate web_state_list_delegate_;
   std::unique_ptr<WebStateList> web_state_list_;
   std::unique_ptr<Browser> browser_;
-
   UIView* view_;
   SideSwipeController* side_swipe_controller_;
+  ScopedKeyWindow scoped_window_;
+  WKWebView* web_view_ = nil;
+  CRWWebViewContentView* content_view_ = nil;
 };
 
 TEST_F(SideSwipeControllerTest, TestConstructor) {
@@ -148,6 +170,14 @@ TEST_F(SideSwipeControllerTest, ObserversTriggerStateUpdate) {
   ASSERT_FALSE(side_swipe_controller_.trailingEdgeNavigationEnabled);
 
   auto testWebState = std::make_unique<web::TestWebState>();
+  testWebState->SetView(content_view_);
+  CRWWebViewScrollViewProxy* scroll_view_proxy =
+      [[CRWWebViewScrollViewProxy alloc] init];
+  UIScrollView* scroll_view = [[UIScrollView alloc] init];
+  [scroll_view_proxy setScrollView:scroll_view];
+  id web_view_proxy_mock = OCMProtocolMock(@protocol(CRWWebViewProxy));
+  [[[web_view_proxy_mock stub] andReturn:scroll_view_proxy] scrollViewProxy];
+  testWebState->SetWebViewProxy(web_view_proxy_mock);
   web::TestWebState* testWebStatePtr = testWebState.get();
   auto testNavigationManager = std::make_unique<web::TestNavigationManager>();
   std::unique_ptr<web::NavigationItem> item = web::NavigationItem::Create();