Add accessibility function to PDFScriptingAPI

chrome/test/data/pdf/basic_plugin_test.js

Index: chrome/test/data/pdf/basic_plugin_test.js
diff --git a/chrome/test/data/pdf/basic_plugin_test.js b/chrome/test/data/pdf/basic_plugin_test.js
index 0413d46378f23fafb487e18e72045a09a08bdccf..8413c52e1bd1d9837825fa3214d5fd470e98b6c4 100644
--- a/chrome/test/data/pdf/basic_plugin_test.js
+++ b/chrome/test/data/pdf/basic_plugin_test.js
@@ -18,6 +18,33 @@ var tests = [
     chrome.test.assertEq(1066, sizer.offsetHeight);
     chrome.test.succeed();
   },
+
+  function testAccessibility() {
+    var client = new PDFScriptingAPI(window, window.location.origin);
+    client.setDestinationWindow(window);
+    client.getAccessibilityJSON(chrome.test.callbackPass(function(json) {
+      chrome.test.assertEq('{"copyable":true,"loaded":true,"numberOfPages":1}',
+                           json);
+    }));
+  },
+
+  function testAccessibilityWithPage() {
+    var client = new PDFScriptingAPI(window, window.location.origin);
+    client.setDestinationWindow(window);
+    client.getAccessibilityJSON(chrome.test.callbackPass(function(json) {
+      var dict = JSON.parse(json);
+      chrome.test.assertEq(612, dict.width);
+      chrome.test.assertEq(792, dict.height);
+      chrome.test.assertEq(1.0, dict.textBox[0].fontSize);
+      chrome.test.assertEq('text', dict.textBox[0].textNodes[0].type);
+      chrome.test.assertEq('this is some text',
+                           dict.textBox[0].textNodes[0].text);
+      chrome.test.assertEq(1.0, dict.textBox[1].fontSize);
+      chrome.test.assertEq('text', dict.textBox[1].textNodes[0].type);
+      chrome.test.assertEq('some more text',
+                           dict.textBox[1].textNodes[0].text);
+    }), 0);
+  }
 ];
 
 window.addEventListener('pdfload', function() {