Remove an obsolete TODO in web_frame.h

reload, reloadWithOverrideURL and loadRequest functions were moved to
web_local_frame.h in https://codereview.chromium.org/2940863005. Later,
in https://chromium-review.googlesource.com/c/chromium/src/+/1035085,
reloadWithOverrideURL() was deleted. In
https://chromium-review.googlesource.com/c/chromium/src/+/1043093,
reload and loadRequest was renamed to StartReload() and
StartNavigation(). The original TODO in web_frame.h is not necessary
anymore.

Bug: None
Change-Id: Ie6c6e8998496a7238e256989bc789566d96de05b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2068930Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Commit-Queue: Shimi Zhang <ctzsm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#743748}

third_party/blink/public/web/web_frame.h

@@ -146,8 +146,6 @@ class BLINK_EXPORT WebFrame {
   static bool ScriptCanAccess(WebFrame*);
 
   // Navigation ----------------------------------------------------------
-  // TODO(clamy): Remove the reload, reloadWithOverrideURL, and loadRequest
-  // functions once RenderFrame only calls WebLoadFrame::load.
 
   // Stops any pending loads on the frame and its children.
   virtual void StopLoading() = 0;