Re-enable these tests as they are no longer failing.

content/browser/accessibility/renderer_accessibility_browsertest.cc

Index: content/browser/accessibility/renderer_accessibility_browsertest.cc
diff --git a/content/browser/accessibility/renderer_accessibility_browsertest.cc b/content/browser/accessibility/renderer_accessibility_browsertest.cc
index 0b04b79749c898ec0b96916a6572ad7c32a86cec..82ee0d680a6c1b00cc366f17d08a47de1bd0a8c2 100644
--- a/content/browser/accessibility/renderer_accessibility_browsertest.cc
+++ b/content/browser/accessibility/renderer_accessibility_browsertest.cc
@@ -279,10 +279,9 @@ IN_PROC_BROWSER_TEST_F(RendererAccessibilityBrowserTest,
   EXPECT_EQ(cell2.id, column2.indirect_child_ids[0]);
 }
 
-// Test crashes/times out, see http://crbug.com/107985
 IN_PROC_BROWSER_TEST_F(
     RendererAccessibilityBrowserTest,
-    DISABLED_CrossPlatformMultipleInheritanceAccessibility2) {
+    CrossPlatformMultipleInheritanceAccessibility2) {
   // Here's another html snippet where WebKit puts the same node as a child
   // of two different parents. Instead of checking the exact output, just
   // make sure that no id is reused in the resulting tree.
@@ -372,9 +371,8 @@ IN_PROC_BROWSER_TEST_F(RendererAccessibilityBrowserTest,
   RecursiveAssertUniqueIds(tree, &ids);
 }
 
-// Test crashes/times out, see http://crbug.com/107985
 IN_PROC_BROWSER_TEST_F(RendererAccessibilityBrowserTest,
-                       DISABLED_CrossPlatformTableSpan) {
+                       CrossPlatformTableSpan) {
   // +---+---+---+
   // |   1   | 2 |
   // +---+---+---+