Record the PDF and top level URL when the PDF plugin crashes.

chrome/browser/resources/pdf/pdf.js

Index: chrome/browser/resources/pdf/pdf.js
diff --git a/chrome/browser/resources/pdf/pdf.js b/chrome/browser/resources/pdf/pdf.js
index c7b172078d7778472af64c4fe851a35bca15b73e..fca7332f0ca756e312b01070514f05d8d1f39096 100644
--- a/chrome/browser/resources/pdf/pdf.js
+++ b/chrome/browser/resources/pdf/pdf.js
@@ -202,8 +202,12 @@ function PDFViewer(browserApi) {
   this.plugin_.setAttribute('background-color', backgroundColor);
   this.plugin_.setAttribute('top-toolbar-height', topToolbarHeight);
 
-  if (!this.browserApi_.getStreamInfo().embedded)
+  if (this.browserApi_.getStreamInfo().embedded) {
+    this.plugin_.setAttribute('top-level-url',
+                              this.browserApi_.getStreamInfo().tabUrl);
+  } else {
     this.plugin_.setAttribute('full-frame', '');
+  }
   document.body.appendChild(this.plugin_);
 
   // Setup the button event listeners.