Print Preview: Fix crash in PrepareFrameAndViewForPrint.

chrome/renderer/print_web_view_helper.cc

Index: chrome/renderer/print_web_view_helper.cc
===================================================================
--- chrome/renderer/print_web_view_helper.cc	(revision 95179)
+++ chrome/renderer/print_web_view_helper.cc	(working copy)
@@ -507,7 +507,7 @@
     store_print_pages_params = false;
     int cookie = print_pages_params_->params.document_cookie;
     Send(new PrintHostMsg_PrintPreviewFailed(routing_id(), cookie));
-    print_preview_context_.Abort();
+    print_preview_context_.Failed();
   } else if (result == ABORT_PREVIEW) {
     DCHECK(is_preview_);
     store_print_pages_params = false;
@@ -1054,6 +1054,12 @@
   ClearContext();
 }
 
+void PrintWebViewHelper::PrintPreviewContext::Failed() {
+  DCHECK(IsBusy());
+  state_ = INITIALIZED;
+  ClearContext();
+}
+
 void PrintWebViewHelper::PrintPreviewContext::Abort() {
   state_ = UNINITIALIZED;
   ClearContext();