Make EarlGrey matchers compliant with Chromium style.

ios/chrome/browser/web/browsing_prevent_default_egtest.mm

 // 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.
 
 #import <EarlGrey/EarlGrey.h>
 #import <UIKit/UIKit.h>
 #import <XCTest/XCTest.h>
 
 #include "base/strings/sys_string_conversions.h"
 #include "components/content_settings/core/browser/host_content_settings_map.h"
@@ skipping 79 matching lines @@
   [ChromeEarlGrey loadURL:testURL];
   chrome_test_util::AssertMainTabCount(1U);
 
   // Tap on the test link and wait for the page to display "Click done", as an
   // indicator that the element was tapped.
   chrome_test_util::TapWebViewElementWithId(linkID);
   [[GREYCondition
       conditionWithName:@"Waiting for webview to display 'Click done'."
                   block:^BOOL {
                     id<GREYMatcher> webViewMatcher =
-                        chrome_test_util::webViewContainingText("Click done");
+                        chrome_test_util::WebViewContainingText("Click done");
                     NSError* error = nil;
                     [[EarlGrey selectElementWithMatcher:webViewMatcher]
                         assertWithMatcher:grey_notNil()
                                     error:&error];
                     return error == nil;
                   }] waitWithTimeout:kConditionTimeout];
 
   // Check that no navigation occurred and no new tabs were opened.
   chrome_test_util::AssertMainTabCount(1U);
   const GURL& currentURL =
@@ skipping 34 matching lines @@
   // Tap on the test link.
   const std::string linkID =
       "webScenarioBrowsingLinkPreventDefaultOverridesWindowOpen";
   chrome_test_util::TapWebViewElementWithId(linkID);
 
   // Stall a bit to make sure the webview doesn't do anything asynchronously.
   [[GREYCondition
       conditionWithName:@"Waiting for webview to display 'Click done'."
                   block:^BOOL {
                     id<GREYMatcher> webViewMatcher =
-                        chrome_test_util::webViewContainingText("Click done");
+                        chrome_test_util::WebViewContainingText("Click done");
                     NSError* error = nil;
                     [[EarlGrey selectElementWithMatcher:webViewMatcher]
                         assertWithMatcher:grey_notNil()
                                     error:&error];
                     return error == nil;
                   }] waitWithTimeout:kConditionTimeout];
 
   // Check that the tab navigated to about:blank and no new tabs were opened.
   [[GREYCondition
       conditionWithName:@"Wait for navigation to about:blank"
                   block:^BOOL {
                     const GURL& currentURL =
                         chrome_test_util::GetCurrentWebState()->GetVisibleURL();
                     return currentURL == GURL(url::kAboutBlankURL);
                   }] waitWithTimeout:kConditionTimeout];
   chrome_test_util::AssertMainTabCount(1U);
 }
 
 @end