pdf: Disable annotation if password protected or large

Bug: 902646
Change-Id: If6f594535a1d1cdff19e441d0995d1ef57e22885
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1504670
Commit-Queue: dstockwell <dstockwell@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#638070}

chrome/browser/resources/pdf/pdf_viewer.js

@@ -136,6 +136,12 @@ function PDFViewer(browserApi) {
   /** @private {boolean} */
   this.hasEnteredAnnotationMode_ = false;
 
+  /** @private {boolean} */
+  this.hadPassword_ = false;
+
+  /** @private {boolean} */
+  this.canSerializeDocument_ = false;
+
   PDFMetrics.record(PDFMetrics.UserAction.DOCUMENT_OPENED);
 
   // Parse open pdf parameters.
@@ -1074,6 +1080,8 @@ PDFViewer.prototype = {
     // If the password screen isn't up, put it up. Otherwise we're
     // responding to an incorrect password so deny it.
     if (!this.passwordScreen_.active) {
+      this.hadPassword_ = true;
+      this.updateAnnotationAvailable_();
       this.passwordScreen_.show();
     } else {
       this.passwordScreen_.deny();
@@ -1119,8 +1127,9 @@ PDFViewer.prototype = {
    * Sets document metadata from the current controller.
    * @param {string} title
    * @param {Array} bookmarks
+   * @param {boolean} canSerializeDocument
    */
-  setDocumentMetadata: function(title, bookmarks) {
+  setDocumentMetadata: function(title, bookmarks, canSerializeDocument) {
     if (title) {
       document.title = title;
     } else {
@@ -1131,6 +1140,8 @@ PDFViewer.prototype = {
       this.toolbar_.docTitle = document.title;
       this.toolbar_.bookmarks = this.bookmarks;
     }
+    this.canSerializeDocument_ = canSerializeDocument;
+    this.updateAnnotationAvailable_();
   },
 
   /**
@@ -1227,6 +1238,12 @@ PDFViewer.prototype = {
     if (this.viewport_.getClockwiseRotations() != 0) {
       annotationAvailable = false;
     }
+    if (this.hadPassword_) {
+      annotationAvailable = false;
+    }
+    if (!this.canSerializeDocument_) {
+      annotationAvailable = false;
+    }
     this.toolbar_.annotationAvailable = annotationAvailable;
   },
 
@@ -1563,7 +1580,8 @@ class PluginController extends ContentController {
         break;
       case 'metadata':
         this.viewer_.setDocumentMetadata(
-            message.data.title, message.data.bookmarks);
+            message.data.title, message.data.bookmarks,
+            message.data.canSerializeDocument);
         break;
       case 'setIsSelecting':
         this.viewer_.setIsSelecting(message.data.isSelecting);

pdf/out_of_process_instance.cc

@@ -91,6 +91,7 @@ constexpr char kJSPreviewLoadedType[] = "printPreviewLoaded";
 constexpr char kJSMetadataType[] = "metadata";
 constexpr char kJSBookmarks[] = "bookmarks";
 constexpr char kJSTitle[] = "title";
+constexpr char kJSCanSerializeDocument[] = "canSerializeDocument";
 // Get password (Plugin -> Page)
 constexpr char kJSGetPasswordType[] = "getPassword";
 // Get password complete arguments (Page -> Plugin)
@@ -1654,6 +1655,9 @@ void OutOfProcessInstance::DocumentLoadComplete(
     metadata_message.Set(pp::Var(kJSTitle), pp::Var(title));
     HistogramEnumeration("PDF.DocumentFeature", HAS_TITLE, FEATURES_COUNT);
   }
+  metadata_message.Set(
+      pp::Var(kJSCanSerializeDocument),
+      pp::Var(engine_->GetLoadedByteSize() <= kMaximumSavedFileSize));
 
   pp::VarArray bookmarks = engine_->GetBookmarks();
   metadata_message.Set(pp::Var(kJSBookmarks), bookmarks);