Fix two ContentHashFetcherTest.* tests' flakiness.

extensions/browser/content_hash_fetcher_unittest.cc

Index: extensions/browser/content_hash_fetcher_unittest.cc
diff --git a/extensions/browser/content_hash_fetcher_unittest.cc b/extensions/browser/content_hash_fetcher_unittest.cc
index e54b4d66f7b8be0cb6e32f25e6fa4100da187bd8..68a1111db0c007c2d74e1bb160f95d8fd5607310 100644
--- a/extensions/browser/content_hash_fetcher_unittest.cc
+++ b/extensions/browser/content_hash_fetcher_unittest.cc
@@ -186,15 +186,9 @@ class ContentHashFetcherTest : public ExtensionsTest {
   base::ScopedTempDir temp_dir_;
 };
 
-// Flaky on Linux and ChromeOS. https://crbug.com/702300
-#if defined(OS_LINUX) || defined(OS_CHROMEOS)
-#define MAYBE_MissingVerifiedContents DISABLED_MissingVerifiedContents
-#else
-#define MAYBE_MissingVerifiedContents MissingVerifiedContents
-#endif
 // This tests our ability to successfully fetch, parse, and validate a missing
 // verified_contents.json file for an extension.
-TEST_F(ContentHashFetcherTest, MAYBE_MissingVerifiedContents) {
+TEST_F(ContentHashFetcherTest, MissingVerifiedContents) {
   // We unzip the extension source to a temp directory to simulate it being
   // installed there, because the ContentHashFetcher will create the _metadata/
   // directory within the extension install dir and write the fetched
@@ -233,17 +227,9 @@ TEST_F(ContentHashFetcherTest, MAYBE_MissingVerifiedContents) {
       base::PathExists(file_util::GetVerifiedContentsPath(extension->path())));
 }
 
-// Flaky on Linux and ChromeOS. https://crbug.com/702300
-#if defined(OS_LINUX) || defined(OS_CHROMEOS)
-#define MAYBE_MissingVerifiedContentsAndCorrupt \
-  DISABLED_MissingVerifiedContentsAndCorrupt
-#else
-#define MAYBE_MissingVerifiedContentsAndCorrupt \
-  MissingVerifiedContentsAndCorrupt
-#endif
 // Similar to MissingVerifiedContents, but tests the case where the extension
 // actually has corruption.
-TEST_F(ContentHashFetcherTest, MAYBE_MissingVerifiedContentsAndCorrupt) {
+TEST_F(ContentHashFetcherTest, MissingVerifiedContentsAndCorrupt) {
   base::FilePath test_dir_base =
       GetTestPath(base::FilePath()).AppendASCII("missing_verified_contents");
   scoped_refptr<Extension> extension =