Remove USEWEBENGINE (#4757)

This code has been sitting behind a define since 2018 (de3a490). I'm not opposed to this code coming back however in this state, it feels better to remove it.

src/widgets/splits/Split.cpp

@@ -524,11 +524,6 @@ void Split::addShortcuts()
              this->setFiltersDialog();
              return "";
          }},
-        {"startWatching",
-         [this](std::vector<QString>) -> QString {
-             this->startWatching();
-             return "";
-         }},
         {"openInBrowser",
          [this](std::vector<QString>) -> QString {
              if (this->getChannel()->getType() == Channel::Type::TwitchWhispers)
@@ -1401,22 +1396,6 @@ void Split::openSubPage()
     }
 }
 
-void Split::startWatching()
-{
-#ifdef USEWEBENGINE
-    ChannelPtr _channel = this->getChannel();
-    TwitchChannel *tc = dynamic_cast<TwitchChannel *>(_channel.get());
-
-    if (tc != nullptr)
-    {
-        StreamView *view = new StreamView(
-            _channel,
-            "https://player.twitch.tv/?parent=twitch.tv&channel=" + tc->name);
-        view->setAttribute(Qt::WA_DeleteOnClose, true);
-        view->show();
-    }
-#endif
-}
 void Split::setFiltersDialog()
 {
     SelectChannelFiltersDialog d(this->getFilters(), this);

src/widgets/splits/Split.hpp

@@ -184,7 +184,6 @@ public slots:
     void openBrowserPlayer();
     void openInStreamlink();
     void openWithCustomScheme();
-    void startWatching();
     void setFiltersDialog();
     void showSearch(bool singleChannel);
     void showViewerList();

src/widgets/splits/SplitHeader.cpp

@@ -37,10 +37,6 @@
 
 #include <cmath>
 
-#ifdef USEWEBENGINE
-#    include "widgets/StreamView.hpp"
-#endif
-
 namespace {
 
 using namespace chatterino;
@@ -383,11 +379,6 @@ std::unique_ptr<QMenu> SplitHeader::createMainMenu()
         "Set filters", this->split_, &Split::setFiltersDialog,
         h->getDisplaySequence(HotkeyCategory::Split, "pickFilters"));
     menu->addSeparator();
-#ifdef USEWEBENGINE
-    this->dropdownMenu.addAction(
-        "Start watching", this->split_, &Split::startWatching;
-        h->getDisplaySequence(HotkeyCategory::Split, "startWatching"));
-#endif
 
     auto *twitchChannel =
         dynamic_cast<TwitchChannel *>(this->split_->getChannel().get());
@@ -397,12 +388,10 @@ std::unique_ptr<QMenu> SplitHeader::createMainMenu()
         menu->addAction(
             OPEN_IN_BROWSER, this->split_, &Split::openInBrowser,
             h->getDisplaySequence(HotkeyCategory::Split, "openInBrowser"));
-#ifndef USEWEBENGINE
         menu->addAction(OPEN_PLAYER_IN_BROWSER, this->split_,
                         &Split::openBrowserPlayer,
                         h->getDisplaySequence(HotkeyCategory::Split,
                                               "openPlayerInBrowser"));
-#endif
         menu->addAction(
             OPEN_IN_STREAMLINK, this->split_, &Split::openInStreamlink,
             h->getDisplaySequence(HotkeyCategory::Split, "openInStreamlink"));