Fix interstitials on OOPIF-based guests.

content/public/test/browser_test_utils.h

Index: content/public/test/browser_test_utils.h
diff --git a/content/public/test/browser_test_utils.h b/content/public/test/browser_test_utils.h
index 00be458e9677252686f0b5de05669d6f2d919758..e329a050b8e44885ae41a47bd049b0b1bdd8c47f 100644
--- a/content/public/test/browser_test_utils.h
+++ b/content/public/test/browser_test_utils.h
@@ -64,10 +64,12 @@ using test_server::EmbeddedTestServer;
 namespace content {
 
 class BrowserContext;
+class InterstitialPage;
 class MessageLoopRunner;
 class NavigationHandle;
 class RenderViewHost;
 class RenderWidgetHost;
+class RenderWidgetHostView;
 class WebContents;
 
 // Navigate a frame with ID |iframe_id| to |url|, blocking until the navigation
@@ -353,6 +355,21 @@ bool IsWebContentsBrowserPluginFocused(content::WebContents* web_contents);
 // Returns the RenderWidgetHost that holds the mouse lock.
 RenderWidgetHost* GetMouseLockWidget(WebContents* web_contents);
 
+// Returns true if inner |interstitial_page| is connected to an outer
+// WebContents.
+bool IsInnerInterstitialPageConnected(InterstitialPage* interstitial_page);
+
+// Returns all the RenderWidgetHostViews inside the |web_contents| that are
+// registered in the RenderWidgetHostInputEventRouter.
+std::vector<RenderWidgetHostView*> GetInputEventRouterRenderWidgetHostViews(
+    WebContents* web_contents);
+
+// Returns the focused RenderWidgetHost.
+RenderWidgetHost* GetFocusedRenderWidgetHost(WebContents* web_contents);
+
+// Rout the |event| through the RenderWidgetHostInputEventRouter.

[kenrb, 2017/04/07 17:06:31]

You might want to elaborate this comment a bit. The important part is that this
function allows correct targeting of mouse events when there are OOPIFs in the
page.

+void RouteMouseEvent(WebContents* web_contents, blink::WebMouseEvent* event);
+
 #if defined(USE_AURA)
 // The following two methods allow a test to send a touch tap sequence, and
 // a corresponding gesture tap sequence, by sending it to the top-level