Make EarlGrey matchers compliant with Chromium style.

ios/chrome/browser/ui/history/tab_history_popup_controller_egtest.mm

Index: ios/chrome/browser/ui/history/tab_history_popup_controller_egtest.mm
diff --git a/ios/chrome/browser/ui/history/tab_history_popup_controller_egtest.mm b/ios/chrome/browser/ui/history/tab_history_popup_controller_egtest.mm
index 596b1ce81c349155be793b7ae590ae9534929ea4..3e3399b73381c2f02c4bda7be3eab862f6b895d8 100644
--- a/ios/chrome/browser/ui/history/tab_history_popup_controller_egtest.mm
+++ b/ios/chrome/browser/ui/history/tab_history_popup_controller_egtest.mm
@@ -48,7 +48,7 @@
 
   // Long press on back button.
   [[EarlGrey
-      selectElementWithMatcher:chrome_test_util::buttonWithAccessibilityLabelId(
+      selectElementWithMatcher:chrome_test_util::ButtonWithAccessibilityLabelId(
                                    IDS_ACCNAME_BACK)]
       performAction:grey_longPress()];
 
@@ -66,12 +66,12 @@
   [[EarlGrey selectElementWithMatcher:grey_text(entry1)]
       performAction:grey_tap()];
   [[EarlGrey
-      selectElementWithMatcher:chrome_test_util::omniboxText(URL1.GetContent())]
+      selectElementWithMatcher:chrome_test_util::OmniboxText(URL1.GetContent())]
       assertWithMatcher:grey_notNil()];
 
   // Long press forward button.
   [[EarlGrey
-      selectElementWithMatcher:chrome_test_util::buttonWithAccessibilityLabelId(
+      selectElementWithMatcher:chrome_test_util::ButtonWithAccessibilityLabelId(
                                    IDS_ACCNAME_FORWARD)]
       performAction:grey_longPress()];
 
@@ -86,7 +86,7 @@
   [[EarlGrey selectElementWithMatcher:grey_text(entry3)]
       performAction:grey_tap()];
   [[EarlGrey
-      selectElementWithMatcher:chrome_test_util::omniboxText(URL3.GetContent())]
+      selectElementWithMatcher:chrome_test_util::OmniboxText(URL3.GetContent())]
       assertWithMatcher:grey_notNil()];
 }