Remove TODO to consolidate InfinitePendingResponseProvider.

Instead of sharing this code, it should be replaced by directly using
the Embedded Test Server.

Bug: 638674
Cq-Include-Trybots: master.tryserver.chromium.mac:ios-simulator-cronet;master.tryserver.chromium.mac:ios-simulator-full-configs
Change-Id: If887548078abe90314363a39c33980225239a523
Reviewed-on: https://chromium-review.googlesource.com/791810
Commit-Queue: Mike Baxley <baxley@chromium.org>
Reviewed-by: Menglu Huang <huangml@chromium.org>
Reviewed-by: Eugene But <eugenebut@chromium.org>
Cr-Commit-Position: refs/heads/master@{#519742}

ios/chrome/browser/web/progress_indicator_egtest.mm

@@ -72,7 +72,7 @@ id<GREYMatcher> ProgressViewWithProgress(CGFloat progress) {
 }
 
 // Response provider that serves the page which never finishes loading.
-// TODO(crbug.com/638674): Evaluate if this can move to shared code.
+// TODO(crbug.com/708307): Convert this to Embedded Test Server.
 class InfinitePendingResponseProvider : public HtmlResponseProvider {
  public:
   explicit InfinitePendingResponseProvider(const GURL& url)

ios/chrome/browser/web/stop_loading_egtest.mm

@@ -30,6 +30,7 @@ namespace {
 const char kPageText[] = "Navigation testing page";
 
 // Response provider that serves the page which never finishes loading.
+// TODO(crbug.com/708307): Convert this to Embedded Test Server.
 class InfinitePendingResponseProvider : public HtmlResponseProvider {
  public:
   explicit InfinitePendingResponseProvider(const GURL& url) : url_(url) {}