[ios clean] Adds Progress Bar to Toolbar.

ios/clean/chrome/browser/ui/toolbar/toolbar_mediator.mm

 // Copyright 2017 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/clean/chrome/browser/ui/toolbar/toolbar_mediator.h"
 
 #include "base/memory/ptr_util.h"
 #include "base/strings/sys_string_conversions.h"
 #import "ios/clean/chrome/browser/ui/toolbar/toolbar_consumer.h"
 #import "ios/web/public/navigation_manager.h"
@@ skipping 15 matching lines @@
 @synthesize webState = _webState;
 
 - (void)dealloc {
   _webStateObserver.reset();
   _webState = nullptr;
 }
 
 #pragma mark - CRWWebStateObserver
 
 - (void)webState:(web::WebState*)webState didLoadPageWithSuccess:(BOOL)success {
-  const GURL& pageURL = webState->GetVisibleURL();
-  [self.consumer setCurrentPageText:base::SysUTF8ToNSString(pageURL.spec())];
   [self.consumer
       setCanGoBack:self.webState->GetNavigationManager()->CanGoBack()];
   [self.consumer
       setCanGoForward:self.webState->GetNavigationManager()->CanGoForward()];
 }
 
 - (void)webStateDidStartLoading:(web::WebState*)webState {
   [self.consumer setIsLoading:self.webState->IsLoading()];
 }
 
 - (void)webStateDidStopLoading:(web::WebState*)webState {
   [self.consumer setIsLoading:self.webState->IsLoading()];
 }
 
+- (void)webState:(web::WebState*)webState
+    didChangeLoadingProgress:(double)progress {
+  [self.consumer setProgress:progress];
+}
+
 #pragma mark - Setters
 
 - (void)setWebState:(web::WebState*)webState {
   _webState = webState;
   _webStateObserver =
       base::MakeUnique<web::WebStateObserverBridge>(_webState, self);
   if (self.consumer) {
     [self updateConsumer];
   }
 }
 
 - (void)setConsumer:(id<ToolbarConsumer>)consumer {
   _consumer = consumer;
   if (self.webState) {
     [self updateConsumer];
   }
 }
 
 #pragma mark - Helper methods
 
 // Updates the consumer to match the current WebState.
 - (void)updateConsumer {
   DCHECK(self.webState);
   DCHECK(self.consumer);
-  const GURL& pageURL = self.webState->GetVisibleURL();
   [self.consumer
       setCanGoForward:self.webState->GetNavigationManager()->CanGoForward()];
   [self.consumer
       setCanGoBack:self.webState->GetNavigationManager()->CanGoBack()];
-  [self.consumer setCurrentPageText:base::SysUTF8ToNSString(pageURL.spec())];
   [self.consumer setIsLoading:self.webState->IsLoading()];
 }
 
 @end