Remove WebContents::Was{Hidden,Shown}() from the content public interface

chrome/test/base/chrome_render_view_host_test_harness.h

Index: chrome/test/base/chrome_render_view_host_test_harness.h
diff --git a/chrome/test/base/chrome_render_view_host_test_harness.h b/chrome/test/base/chrome_render_view_host_test_harness.h
index ebba6c7930fb1b3bed06765df2166d04bb731e7b..a79ffc3b82d6fdd4277f80513b291db6bd32b6a2 100644
--- a/chrome/test/base/chrome_render_view_host_test_harness.h
+++ b/chrome/test/base/chrome_render_view_host_test_harness.h
@@ -24,6 +24,10 @@ class ChromeRenderViewHostTestHarness
 
   TestingProfile* profile();
 
+  // Simulate the WebContents being shown or hidden.
+  void SimulateShow();
+  void SimulateHide();
+
  protected:
   // testing::Test
   void TearDown() override;