Add functions to collect bookmarks from Pdfium

TraverseBookmarks() collects the bookmarks into a VarDictionary, with the following key/values:
 - title
 - page (if one is available)
 - children, a VarArray of bookmarks (each a VarDictionary with the same structure)

BUG=110020

Review URL: https://codereview.chromium.org/810623003

Cr-Commit-Position: refs/heads/master@{#312059}

1 files changed, 8 insertions, 0 deletions

diff --git a/pdf/out_of_process_instance.cc b/pdf/out_of_process_instance.cc
index 4e76e32..f9a7031 100644
--- a/pdf/out_of_process_instance.cc
+++ b/pdf/out_of_process_instance.cc
@@ -73,6 +73,9 @@ const char kJSPageHeight[] = "height";
 // Document load progress arguments (Plugin -> Page)
 const char kJSLoadProgressType[] = "loadProgress";
 const char kJSProgressPercentage[] = "progress";
+// Bookmarks
+const char kJSBookmarksType[] = "bookmarks";
+const char kJSBookmarks[] = "bookmarks";
 // Get password arguments (Plugin -> Page)
 const char kJSGetPasswordType[] = "getPassword";
 // Get password complete arguments (Page -> Plugin)
@@ -1111,6 +1114,11 @@ void OutOfProcessInstance::DocumentLoadComplete(int page_count) {
   message.Set(pp::Var(kJSProgressPercentage), pp::Var(100)) ;
   PostMessage(message);
 
+  pp::VarDictionary bookmarksMessage;
+  bookmarksMessage.Set(pp::Var(kType), pp::Var(kJSBookmarksType));
+  bookmarksMessage.Set(pp::Var(kJSBookmarks), engine_->GetBookmarks());
+  PostMessage(bookmarksMessage);
+
   if (!full_)
     return;