Fix for 'Rotate clockwise/counter clockwise' should not present in context...

Fix for 'Rotate clockwise/counter clockwise' should not present in context menu in crashed PDF page.

When we are in the crashed PDf page then rotate does not have any use and it does
nothing as only sad_plugin bitmap is painted.
So rotate menu items should not present in the context menu.
Changes done to check when plugin is crashed then rotation is not allowed.
and rotate menu items are not added in context menu.

BUG=462525

Review URL: https://codereview.chromium.org/962193002

Cr-Commit-Position: refs/heads/master@{#318647}

content/renderer/pepper/pepper_plugin_instance_impl.cc

@@ -1828,7 +1828,7 @@ bool PepperPluginInstanceImpl::GetPrintPresetOptionsFromDocument(
 }
 
 bool PepperPluginInstanceImpl::CanRotateView() {
-  if (!LoadPdfInterface())
+  if (!LoadPdfInterface() || module()->is_crashed())
     return false;
 
   return true;