Revert of [ios] Implemented LoadHtml w/o using data:// URLs.

ios/web/public/test/web_test_with_web_state.h

Index: ios/web/public/test/web_test_with_web_state.h
diff --git a/ios/web/public/test/web_test_with_web_state.h b/ios/web/public/test/web_test_with_web_state.h
index 1f01f185cf16dfd3b1bf2f22add2a4c8e1312d2a..8c26f2bdfa1ff8d04c6be88b622393ff73c142ba 100644
--- a/ios/web/public/test/web_test_with_web_state.h
+++ b/ios/web/public/test/web_test_with_web_state.h
@@ -30,12 +30,15 @@
   void WillProcessTask(const base::PendingTask& pending_task) override;
   void DidProcessTask(const base::PendingTask& pending_task) override;
 
-  // Loads the specified HTML content with URL into the WebState.
-  void LoadHtml(NSString* html, const GURL& url);
-  // Loads the specified HTML content into the WebState, using test url name.
+  // Loads the specified HTML content into the WebController via public APIs.
   void LoadHtml(NSString* html);
-  // Loads the specified HTML content into the WebState, using test url name.
+  // Loads the specified HTML content into the WebController via public APIs.
   void LoadHtml(const std::string& html);
+  // Loads |url| into the WebController via public APIs.
+  // Note if anyone uses this to load web pages from the live internet, the
+  // tests can be flaky / dependent on content and behavior beyond our control.
+  // Use this only when it's impossible to test with static HTML using LoadHtml.
+  void LoadURL(const GURL& url);
   // Blocks until both known NSRunLoop-based and known message-loop-based
   // background tasks have completed
   void WaitForBackgroundTasks();