Enable the following tests under Mac ASan:

 - FoundationUtilTest.NSStringToFilePath
 - BrowserAccessibilityTest.BasicAttributeTest

BUG=173983
R=dmazzoni@chromium.org, thakis@chromium.org

Review URL: https://codereview.chromium.org/26887007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@229408 0039d316-1c4b-4281-b951-d872f2087c98

base/mac/foundation_util_unittest.mm

@@ -308,8 +308,7 @@
   EXPECT_NSEQ(@"/a/b", FilePathToNSString(FilePath("/a/b")));
 }
 
-// http://crbug.com/173983 Fails consistently under Mac ASAN.
-TEST(FoundationUtilTest, DISABLED_NSStringToFilePath) {
+TEST(FoundationUtilTest, NSStringToFilePath) {
   EXPECT_EQ(FilePath(), NSStringToFilePath(nil));
   EXPECT_EQ(FilePath(), NSStringToFilePath(@""));
   EXPECT_EQ(FilePath("/a/b"), NSStringToFilePath(@"/a/b"));

content/browser/accessibility/browser_accessibility_mac_unittest.mm

@@ -125,8 +125,7 @@ void RebuildAccessibilityTree() {
 }
 
 // Test to ensure querying standard attributes works.
-// http://crbug.com/173983 Test fails on Mac ASan bot
-TEST_F(BrowserAccessibilityTest, DISABLED_BasicAttributeTest) {
+TEST_F(BrowserAccessibilityTest, BasicAttributeTest) {
   NSString* helpText = [accessibility_
       accessibilityAttributeValue:NSAccessibilityHelpAttribute];
   EXPECT_NSEQ(@"HelpText", helpText);