Revert of Add test_runner hook to dump drag image.

content/shell/renderer/test_runner/test_runner.h

Index: content/shell/renderer/test_runner/test_runner.h
diff --git a/content/shell/renderer/test_runner/test_runner.h b/content/shell/renderer/test_runner/test_runner.h
index 0a6e704b3d5c9e00265434f3f20006eb6ea32fab..ffb6bf0a4ee71e5a43902d4e33ef24e55cabc0da 100644
--- a/content/shell/renderer/test_runner/test_runner.h
+++ b/content/shell/renderer/test_runner/test_runner.h
@@ -119,7 +119,6 @@
   void RequestPointerUnlock();
   bool isPointerLocked();
   void setToolTipText(const blink::WebString&);
-  bool shouldDumpDragImage();
 
   bool midiAccessorResult();
 
@@ -470,12 +469,6 @@
   // WebFrameClient receives a loadURLExternally() call.
   void WaitUntilExternalURLLoad();
 
-  // This function sets a flag which tells the WebTestProxy to dump the drag
-  // image when the next drag-and-drop is initiated. It is equivalent to
-  // DumpAsTextWithPixelResults but the pixel results will be the drag image
-  // instead of a snapshot of the page.
-  void DumpDragImage();
-
   ///////////////////////////////////////////////////////////////////////////
   // Methods interacting with the WebTestProxy
 
@@ -746,9 +739,6 @@
   // taking possible transforms of the selection rect into account.
   bool dump_selection_rect_;
 
-  // If true, the test_shell will dump the drag image as pixel results.
-  bool dump_drag_image_;
-
   // If true, pixel dump will be produced as a series of 1px-tall, view-wide
   // individual paints over the height of the view.
   bool test_repaint_;