Add schedulePageBlock() to navigation scheduler

Source/core/loader/NavigationScheduler.cpp

Index: Source/core/loader/NavigationScheduler.cpp
diff --git a/Source/core/loader/NavigationScheduler.cpp b/Source/core/loader/NavigationScheduler.cpp
index 0b0afb0d1f32a8aed5e08bdc1d1ce0f809af4a89..bd4478629fe27c9239048673aa03d74629d71619 100644
--- a/Source/core/loader/NavigationScheduler.cpp
+++ b/Source/core/loader/NavigationScheduler.cpp
@@ -321,6 +321,12 @@ void NavigationScheduler::scheduleLocationChange(Document* originDocument, const
     schedule(adoptPtr(new ScheduledLocationChange(originDocument, url, referrer, lockBackForwardList)));
 }
 
+void NavigationScheduler::schedulePageBlock(Document* originDocument, const Referrer& referrer)
+{
+    ASSERT(m_frame->page());
+    schedule(adoptPtr(new ScheduledLocationChange(originDocument, "data:,", referrer, false)));

[Nate Chapin, 2014/07/14 19:26:40]

I'd prefer to use SecurityOrigin::urlWithUniqueSecurityOrigin() instead of
inlining "data:," here.

[Tom Sepez, 2014/07/14 19:45:49]

I thought there was a threading issue here.  I guess we're on the main thread
here, not a bg parser thread, so I'll change this.

+}
+
 void NavigationScheduler::scheduleFormSubmission(PassRefPtrWillBeRawPtr<FormSubmission> submission)
 {
     ASSERT(m_frame->page());