Remove unused Tab -isLinkLoadingPrerenderTab.

Bug: 760556
Cq-Include-Trybots: master.tryserver.chromium.mac:ios-simulator-cronet
Change-Id: I5a892956e3b3247d1c01d42f1c6a04bb4a9ec8b1
Reviewed-on: https://chromium-review.googlesource.com/727023Reviewed-by: Rohit Rao (ping after 24h) <rohitrao@chromium.org>
Commit-Queue: Sylvain Defresne <sdefresne@chromium.org>
Cr-Commit-Position: refs/heads/master@{#510100}

ios/chrome/browser/tabs/tab.h

@@ -134,7 +134,6 @@ extern NSString* const kProxyPassthroughHeaderValue;
 // TODO(crbug.com/661663): Should this property abstract away the concept of
 // prerendering?  Maybe this can move to the TabDelegate interface.
 @property(nonatomic, assign) BOOL isPrerenderTab;
-@property(nonatomic, assign) BOOL isLinkLoadingPrerenderTab;
 @property(nonatomic, assign) BOOL isVoiceSearchResultsTab;
 
 // |YES| if the tab has finished loading.

ios/chrome/browser/tabs/tab.mm

@@ -306,7 +306,6 @@ void TabInfoBarObserver::OnInfoBarReplaced(infobars::InfoBar* old_infobar,
     _iOSCaptivePortalBlockingPageDelegate;
 @synthesize useGreyImageCache = useGreyImageCache_;
 @synthesize isPrerenderTab = _isPrerenderTab;
-@synthesize isLinkLoadingPrerenderTab = isLinkLoadingPrerenderTab_;
 @synthesize isVoiceSearchResultsTab = _isVoiceSearchResultsTab;
 @synthesize overscrollActionsController = _overscrollActionsController;
 @synthesize overscrollActionsControllerDelegate =
@@ -440,19 +439,13 @@ void TabInfoBarObserver::OnInfoBarReplaced(infobars::InfoBar* old_infobar,
   return self.webState ? self.webState->GetNavigationManager() : nullptr;
 }
 
-- (void)setIsLinkLoadingPrerenderTab:(BOOL)isLinkLoadingPrerenderTab {
-  isLinkLoadingPrerenderTab_ = isLinkLoadingPrerenderTab;
-  [self setIsPrerenderTab:isLinkLoadingPrerenderTab];
-}
-
 - (void)setIsPrerenderTab:(BOOL)isPrerender {
   if (_isPrerenderTab == isPrerender)
     return;
 
   _isPrerenderTab = isPrerender;
 
-  self.webState->SetShouldSuppressDialogs(isPrerender &&
-                                          !isLinkLoadingPrerenderTab_);
+  self.webState->SetShouldSuppressDialogs(isPrerender);
 
   if (_isPrerenderTab)
     return;
@@ -1164,7 +1157,7 @@ void TabInfoBarObserver::OnInfoBarReplaced(infobars::InfoBar* old_infobar,
 
 - (BOOL)webController:(CRWWebController*)webController
     shouldOpenExternalURL:(const GURL&)URL {
-  if (_isPrerenderTab && !isLinkLoadingPrerenderTab_) {
+  if (_isPrerenderTab) {
     [delegate_ discardPrerender];
     return NO;
   }