Remove suppressions for bug 52808 (leak in HostContentSettingsMapTest.ResourceIdentifierPrefs)

This should be fixed by http://crrev.com/56831, no?

BUG=52808
TEST=valgrind bots stay happy

Review URL: http://codereview.chromium.org/3122032

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@56875 0039d316-1c4b-4281-b951-d872f2087c98

tools/heapcheck/suppressions.txt

@@ -957,13 +957,3 @@
    fun:Callback1::Type* NewCallback
    fun:PrefValueStoreTest_TestConcurrentPolicyRefresh_Test::TestBody
 }
-{
-   bug_52808
-   Heapcheck:Leak
-   ...
-   fun:base::JSONReader::BuildValue
-   fun:base::JSONReader::JsonToValue
-   fun:base::JSONReader::ReadAndReturnError
-   fun:base::JSONReader::Read
-   fun:::HostContentSettingsMapTest_ResourceIdentifierPrefs_Test::TestBody
-}

tools/valgrind/memcheck/suppressions.txt

@@ -4149,17 +4149,6 @@
    ...
    fun:_ZN17URLRequestHttpJobD0Ev
 }
-{
-   bug_52828
-   Memcheck:Leak
-   fun:_Znw*
-   ...
-   fun:_ZN4base10JSONReader10BuildValueEb
-   fun:_ZN4base10JSONReader11JsonToValueERKSsbb
-   fun:_ZN4base10JSONReader18ReadAndReturnErrorERKSsbPiPSs
-   fun:_ZN4base10JSONReader4ReadERKSsb
-   fun:_ZN81_GLOBAL__N_chrome_browser_host_content_settings_map_unittest.cc*
-}
 {
    bug_52831
    Memcheck:Leak