Mark some IndexedDB browser tests as flaky....

chrome/browser/in_process_webkit/indexed_db_browsertest.cc

Index: chrome/browser/in_process_webkit/indexed_db_browsertest.cc
===================================================================
--- chrome/browser/in_process_webkit/indexed_db_browsertest.cc	(revision 72357)
+++ chrome/browser/in_process_webkit/indexed_db_browsertest.cc	(working copy)
@@ -52,7 +52,8 @@
   SimpleTest(testUrl(FilePath(FILE_PATH_LITERAL("cursor_test.html"))));
 }
 
-IN_PROC_BROWSER_TEST_F(IndexedDBBrowserTest, IndexTest) {
+// Flaky. See http://crbug.com/70643.
+IN_PROC_BROWSER_TEST_F(IndexedDBBrowserTest, FLAKY_IndexTest) {
   SimpleTest(testUrl(FilePath(FILE_PATH_LITERAL("index_test.html"))));
 }
 
@@ -71,7 +72,8 @@
   SimpleTest(testUrl(FilePath(FILE_PATH_LITERAL("transaction_get_test.html"))));
 }
 
-IN_PROC_BROWSER_TEST_F(IndexedDBBrowserTest, ObjectStoreTest) {
+// Flaky. See http://crbug.com/70643.
+IN_PROC_BROWSER_TEST_F(IndexedDBBrowserTest, FLAKY_ObjectStoreTest) {
   SimpleTest(testUrl(FilePath(FILE_PATH_LITERAL("object_store_test.html"))));
 }
 
@@ -79,11 +81,13 @@
   SimpleTest(testUrl(FilePath(FILE_PATH_LITERAL("database_test.html"))));
 }
 
-IN_PROC_BROWSER_TEST_F(IndexedDBBrowserTest, TransactionTest) {
+// Flaky. See http://crbug.com/70643.
+IN_PROC_BROWSER_TEST_F(IndexedDBBrowserTest, FLAKY_TransactionTest) {
   SimpleTest(testUrl(FilePath(FILE_PATH_LITERAL("transaction_test.html"))));
 }
 
-IN_PROC_BROWSER_TEST_F(IndexedDBBrowserTest, DoesntHangTest) {
+// Flaky. See http://crbug.com/70643.
+IN_PROC_BROWSER_TEST_F(IndexedDBBrowserTest, FLAKY_DoesntHangTest) {
   SimpleTest(testUrl(FilePath(
       FILE_PATH_LITERAL("transaction_run_forever.html"))));
   ui_test_utils::CrashTab(browser()->GetSelectedTabContents());