Hookup print and save buttons in the out of process PDF plugin

chrome/browser/resources/pdf/background.js

Index: chrome/browser/resources/pdf/background.js
diff --git a/chrome/browser/resources/pdf/background.js b/chrome/browser/resources/pdf/background.js
index 06f5b2e0d768225039bf04a19d041ac281247e11..724f34f9141122020193a36bcf6680a49aa28012 100644
--- a/chrome/browser/resources/pdf/background.js
+++ b/chrome/browser/resources/pdf/background.js
@@ -2,11 +2,37 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-chrome.streamsPrivate.onExecuteMimeTypeHandler.addListener(
-  function(mime_type, original_url, content_url, tab_id) {
-    // TODO(raymes): Currently this doesn't work with embedded PDFs (it
-    // causes the entire frame to navigate). Also work out how we can
-    // mask the URL with the URL of the PDF.
-    chrome.tabs.update(tab_id, { url: 'index.html?' + content_url });
+(function() {
+  'use strict';
+
+  /**
+   * Keep a stack of stream details for requests. These are pushed onto the
+   * stack as requests come in and popped off the stack as they are handled by a
+   * renderer.
+   * TODO(raymes): This is probably racy for multiple requests. We could
+   * associate an ID with the request but this code will probably change
+   * completely when MIME type handling is improved.
+   */
+  var streamsCache = [];
+
+  window.popStreamDetails = function() {
+    if (streamsCache.length > 0)
+      return streamsCache.pop();
   }

[arv (Not doing code reviews), 2014/02/21 14:41:03]

missing semicolon now that is a statement.

[raymes, 2014/02/23 23:55:10]

Done.

-);
+
+  chrome.streamsPrivate.onExecuteMimeTypeHandler.addListener(
+    function(mime_type, original_url, content_url, tab_id) {

[arv (Not doing code reviews), 2014/02/21 14:41:03]

no underscores in js

[raymes, 2014/02/23 23:55:10]

Done.

+      // TODO(raymes): Currently this doesn't work with embedded PDFs (it
+      // causes the entire frame to navigate). Also work out how we can
+      // mask the URL with the URL of the PDF.
+      var streamDetails = {
+        mimeType: mime_type,
+        originalURL: original_url,
+        streamURL: content_url
+      };
+      streamsCache.push(streamDetails);
+      chrome.tabs.update(tab_id, { url: 'index.html' });

[arv (Not doing code reviews), 2014/02/21 14:41:03]

no ws after { nor before }

[raymes, 2014/02/23 23:55:10]

Done.

+    }
+  );
+
+}());