Disable SetPageDisplayStateWithUserScalableEnabled on devices.

ios/web/web_state/ui/crw_web_controller_unittest.mm

 // Copyright 2012 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.
 
 #import "ios/web/web_state/ui/crw_web_controller.h"
 
 #import <WebKit/WebKit.h>
 
 #include <utility>
 
@@ skipping 632 matching lines @@
       CGFloat original_minimum_zoom_scale,
       CGFloat original_maximum_zoom_scale,
       CGFloat original_zoom_scale) const {
     return web::PageDisplayState(
         scroll_offset.x, scroll_offset.y, original_minimum_zoom_scale,
         original_maximum_zoom_scale,
         relative_zoom_scale * original_minimum_zoom_scale);
   }
 };
 
-// TODO(iOS): Flaky on the bots. crbug/493427
+// TODO(crbug/493427): Flaky on the bots.
 TEST_F(CRWWebControllerPageScrollStateTest,
        FLAKY_SetPageDisplayStateWithUserScalableDisabled) {
 #if !TARGET_IPHONE_SIMULATOR
-  // TODO(crbug.com/453530): fails flakily on device, so skip it there.
+  // TODO(crbug.com/493427): fails flakily on device, so skip it there.
   return;
 #endif
   web::PageZoomState zoom_state(1.0, 5.0, 1.0);
   LoadHtml(GetHTMLForZoomState(zoom_state, PAGE_SCALABILITY_DISABLED));
   WaitForZoomRendering(web_controller(), zoom_state);
   web::PageZoomState original_zoom_state =
       web_controller().pageDisplayState.zoom_state();
 
   web::NavigationManager* nagivation_manager =
       web_state()->GetNavigationManager();
   nagivation_manager->GetLastCommittedItem()->SetPageDisplayState(
       CreateTestPageDisplayState(CGPointMake(1.0, 1.0),  // scroll offset
                                  3.0,                    // relative zoom scale
                                  1.0,    // original minimum zoom scale
                                  5.0,    // original maximum zoom scale
                                  1.0));  // original zoom scale
   [web_controller() restoreStateFromHistory];
 
   // |-restoreStateFromHistory| is async; wait for its completion.
   base::test::ios::WaitUntilCondition(^bool() {
     return web_controller().pageDisplayState.scroll_state().offset_x() == 1.0;
   });
 
   ASSERT_EQ(original_zoom_state,
             web_controller().pageDisplayState.zoom_state());
 };
 
-// TODO(iOS): Flaky on the bots. crbug/493427
+// TODO(crbug/493427): Flaky on the bots.
 TEST_F(CRWWebControllerPageScrollStateTest,
        FLAKY_SetPageDisplayStateWithUserScalableEnabled) {
+#if !TARGET_IPHONE_SIMULATOR
+  // TODO(crbug.com/493427): fails flakily on device, so skip it there.
+  return;
+#endif
   web::PageZoomState zoom_state(1.0, 5.0, 1.0);
 
   LoadHtml(GetHTMLForZoomState(zoom_state, PAGE_SCALABILITY_ENABLED));
   WaitForZoomRendering(web_controller(), zoom_state);
 
   web::NavigationManager* nagivation_manager =
       web_state()->GetNavigationManager();
   nagivation_manager->GetLastCommittedItem()->SetPageDisplayState(
       CreateTestPageDisplayState(CGPointMake(1.0, 1.0),  // scroll offset
                                  3.0,                    // relative zoom scale
                                  1.0,    // original minimum zoom scale
                                  5.0,    // original maximum zoom scale
                                  1.0));  // original zoom scale
   [web_controller() restoreStateFromHistory];
 
   // |-restoreStateFromHistory| is async; wait for its completion.
   base::test::ios::WaitUntilCondition(^bool() {
     return web_controller().pageDisplayState.scroll_state().offset_x() == 1.0;
   });
 
   web::PageZoomState final_zoom_state =
       web_controller().pageDisplayState.zoom_state();
   EXPECT_FLOAT_EQ(3, final_zoom_state.zoom_scale() /
                         final_zoom_state.minimum_zoom_scale());
 };
 
-// TODO(iOS): Flaky on the bots. crbug/493427
+// TODO(crbug/493427): Flaky on the bots.
 TEST_F(CRWWebControllerPageScrollStateTest, FLAKY_AtTop) {
   // This test fails on iPhone 6/6+; skip until it's fixed. crbug.com/453105
   if (IsIPhone6Or6Plus())
     return;
 
   web::PageZoomState zoom_state = web::PageZoomState(1.0, 5.0, 1.0);
   LoadHtml(GetHTMLForZoomState(zoom_state, PAGE_SCALABILITY_ENABLED));
   WaitForZoomRendering(web_controller(), zoom_state);
   ASSERT_TRUE(web_controller().atTop);
 
@@ skipping 370 matching lines @@
 
   [web_controller() setDelegate:delegate];
   web::SimulateWKWebViewCrash(webView_);
 
   EXPECT_OCMOCK_VERIFY(delegate);
   EXPECT_FALSE([web_controller() isViewAlive]);
   [web_controller() setDelegate:nil];
 };
 
 }  // namespace