Bug 15762 happens on Linux, too, so move suppression to generic file....

tools/valgrind/suppressions_mac.txt

Index: tools/valgrind/suppressions_mac.txt
===================================================================
--- tools/valgrind/suppressions_mac.txt	(revision 20487)
+++ tools/valgrind/suppressions_mac.txt	(working copy)
@@ -288,23 +288,6 @@
    fun:_ZN24ExtensionsServiceBackend14UnpackerClient30OnUnpackExtensionSucceededImplERK15DictionaryValueRKSt6vectorI6Tuple2I8SkBitmap8FilePathESaIS8_EE
 }
 {
-   bug_15762
-   Memcheck:Cond
-   fun:_ZN7testing8internal11CmpHelperEQIjjEENS_15AssertionResultEPKcS4_RKT_RKT0_
-   fun:_ZN7testing8internal8EqHelperILb0EE7CompareIjjEENS_15AssertionResultEPKcS6_RKT_RKT0_
-   fun:_ZN39ImageOperations_CreateMaskedBitmap_Test8TestBodyEv
-   fun:_ZN7testing4Test3RunEv
-   fun:_ZN7testing8internal12TestInfoImpl3RunEv
-   fun:_ZN7testing8internal12TestInfoImpl7RunTestEPNS_8TestInfoE
-   fun:_ZNK7testing8internal4ListIPNS_8TestInfoEE7ForEachIPFvS3_EEEvT_
-   fun:_ZN7testing8TestCase3RunEv
-   fun:_ZN7testing8TestCase11RunTestCaseEPS0_
-   fun:_ZNK7testing8internal4ListIPNS_8TestCaseEE7ForEachIPFvS3_EEEvT_
-   fun:_ZN7testing8internal12UnitTestImpl11RunAllTestsEv
-   fun:_ZN7testing8UnitTest3RunEv
-   fun:main
-}
-{
    bug_15819a
    Memcheck:Cond
    fun:_ZNK10CMMMtxOnly10ConvertMinE10CMM3x3Type10CMM3x1TypeR12CMMMinBuffermm