Remove matcher to wait for static HTML view.

ios/chrome/test/earl_grey/chrome_earl_grey.mm

Index: ios/chrome/test/earl_grey/chrome_earl_grey.mm
diff --git a/ios/chrome/test/earl_grey/chrome_earl_grey.mm b/ios/chrome/test/earl_grey/chrome_earl_grey.mm
index efbd2d3fef7d377ce8674f3420ac9e1d15c28355..f370ae32b9babf659a3d571c619007d7af373606 100644
--- a/ios/chrome/test/earl_grey/chrome_earl_grey.mm
+++ b/ios/chrome/test/earl_grey/chrome_earl_grey.mm
@@ -9,14 +9,19 @@
 
 #include "base/mac/foundation_util.h"
 #include "base/strings/sys_string_conversions.h"
+#import "base/test/ios/wait_util.h"
+#include "components/strings/grit/components_strings.h"
+#import "ios/chrome/browser/ui/static_content/static_html_view_controller.h"
 #import "ios/chrome/test/app/chrome_test_util.h"
 #import "ios/chrome/test/app/history_test_util.h"
 #include "ios/chrome/test/app/navigation_test_util.h"
+#import "ios/chrome/test/app/static_html_view_test_util.h"
 #import "ios/testing/wait_util.h"
 #import "ios/web/public/test/earl_grey/js_test_util.h"
 #import "ios/web/public/test/web_view_interaction_test_util.h"
 #import "ios/web/public/web_state/js/crw_js_injection_receiver.h"
 #import "ios/web/public/web_state/web_state.h"
+#include "ui/base/l10n/l10n_util.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
@@ -125,4 +130,26 @@ id ExecuteJavaScript(NSString* javascript,
                  elementID);
 }
 
++ (void)waitForErrorPage {
+  NSString* const kInternetDisconnectedError =
+      l10n_util::GetNSString(IDS_ERRORPAGES_HEADING_NOT_AVAILABLE);
+  [self waitForStaticHTMLViewContainingText:kInternetDisconnectedError
+                              isTextPresent:YES];
+}
+
++ (void)waitForStaticHTMLViewContainingText:(NSString*)text
+                              isTextPresent:(BOOL)present {
+  GREYCondition* condition = [GREYCondition
+      conditionWithName:@"Wait for page to complete loading."
+                  block:^BOOL {
+                    return present ==
+                           chrome_test_util::StaticHtmlViewContainingText(
+                               chrome_test_util::GetCurrentWebState(),
+                               base::SysNSStringToUTF8(text));
+                  }];
+  GREYAssert([condition waitWithTimeout:testing::kWaitForUIElementTimeout],
+             @"Failed to find static html view %@containing %@",
+             present ? @"" : @"not ", text);
+}
+
 @end