OOPIF support for layout test pixel dumps.

content/shell/test_runner/web_test_delegate.h

Index: content/shell/test_runner/web_test_delegate.h
diff --git a/content/shell/test_runner/web_test_delegate.h b/content/shell/test_runner/web_test_delegate.h
index 344018e32df8e68aba64308c178c79cd14db918a..11a912c16c63df998d17683e8dc1e8e605bf0fd2 100644
--- a/content/shell/test_runner/web_test_delegate.h
+++ b/content/shell/test_runner/web_test_delegate.h
@@ -18,6 +18,8 @@
 
 #define WEBTESTRUNNER_NEW_HISTORY_CAPTURE
 
+class SkBitmap;
+
 namespace base {
 class DictionaryValue;
 }
@@ -301,6 +303,11 @@ class WebTestDelegate {
   virtual bool IsNavigationInitiatedByRenderer(
       const blink::WebURLRequest& request) = 0;
 
+  // Asks the delegate to take a pixels dump of the whole page (including OOPIFs
+  // if any) and to pass the result to |callback|.
+  virtual void DumpPixelsAsync(
+      base::OnceCallback<void(const SkBitmap&)> callback);
+
  protected:
   virtual ~WebTestDelegate() {}
 };