Make custom GREYAction methods Chromium C-Style.

ios/chrome/test/earl_grey/chrome_actions.mm

Index: ios/chrome/test/earl_grey/chrome_actions.mm
diff --git a/ios/chrome/test/earl_grey/chrome_actions.mm b/ios/chrome/test/earl_grey/chrome_actions.mm
index 3f2690f438dc7cbed493bcbd2d9076f495f76121..6c4eb6c1eb5097ebbd4f827dfd1db020bc1e55cf 100644
--- a/ios/chrome/test/earl_grey/chrome_actions.mm
+++ b/ios/chrome/test/earl_grey/chrome_actions.mm
@@ -15,14 +15,19 @@
 
 namespace chrome_test_util {
 
-id<GREYAction> longPressElementForContextMenu(const std::string& element_id,
+id<GREYAction> LongPressElementForContextMenu(const std::string& element_id,
                                               bool triggers_context_menu) {
-  return webViewLongPressElementForContextMenu(
+  return WebViewLongPressElementForContextMenu(
       chrome_test_util::GetCurrentWebState(), element_id,
       triggers_context_menu);
 }
 
-id<GREYAction> turnCollectionViewSwitchOn(BOOL on) {
+id<GREYAction> longPressElementForContextMenu(const std::string& element_id,
+                                              bool triggers_context_menu) {
+  return LongPressElementForContextMenu(element_id, triggers_context_menu);
+}
+
+id<GREYAction> TurnCollectionViewSwitchOn(BOOL on) {
   id<GREYMatcher> constraints = grey_not(grey_systemAlertViewShown());
   NSString* actionName =
       [NSString stringWithFormat:@"Turn collection view switch to %@ state",