Upstream more leaf files in ios/web/web_state

ios/web/web_state/web_state_observer_bridge.mm

 // Copyright 2015 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/public/web_state/web_state_observer_bridge.h"
 
 namespace web {
 
 WebStateObserverBridge::WebStateObserverBridge(web::WebState* webState,
                                                id<CRWWebStateObserver> observer)
@@ skipping 12 matching lines @@
 
 void WebStateObserverBridge::NavigationItemCommitted(
     const web::LoadCommittedDetails& load_detatils) {
   SEL selector = @selector(webState:didCommitNavigationWithDetails:);
   if ([observer_ respondsToSelector:selector]) {
     [observer_ webState:web_state()
         didCommitNavigationWithDetails:load_detatils];
   }
 }
 
+void WebStateObserverBridge::DidStartLoading() {
+  SEL selector = @selector(webStateDidStartLoading:);
+  if ([observer_ respondsToSelector:selector]) {
+    [observer_ webStateDidStartLoading:web_state()];
+  }
+}
+
+void WebStateObserverBridge::DidStopLoading() {
+  SEL selector = @selector(webStateDidStopLoading:);
+  if ([observer_ respondsToSelector:selector]) {
+    [observer_ webStateDidStopLoading:web_state()];
+  }
+}
+
 void WebStateObserverBridge::PageLoaded(
     web::PageLoadCompletionStatus load_completion_status) {
   SEL selector = @selector(webStateDidLoadPage:);
   if ([observer_ respondsToSelector:selector])
     [observer_ webStateDidLoadPage:web_state()];
 }
 
 void WebStateObserverBridge::InsterstitialDismissed() {
   SEL selector = @selector(webStateDidDismissInterstitial:);
   if ([observer_ respondsToSelector:selector])
@@ skipping 73 matching lines @@
 void WebStateObserverBridge::WebStateDestroyed() {
   SEL selector = @selector(webStateDestroyed:);
   if ([observer_ respondsToSelector:selector]) {
     // |webStateDestroyed:| may delete |this|, so don't expect |this| to be
     // valid afterwards.
     [observer_ webStateDestroyed:web_state()];
   }
 }
 
 }  // namespace web