Temp suppression for mem leak with Version::GetVersionFromString()...

tools/valgrind/memcheck/suppressions.txt

Index: tools/valgrind/memcheck/suppressions.txt
===================================================================
--- tools/valgrind/memcheck/suppressions.txt	(revision 22048)
+++ tools/valgrind/memcheck/suppressions.txt	(working copy)
@@ -957,3 +957,27 @@
    fun:_ZN7WebCore13QualifiedNameC1ERKNS_12AtomicStringES3_S3_
    fun:_ZN7WebCore8SVGNames4initEv
 }
+
+{
+  crbug_18070
+  Memcheck:Leak
+  ...
+  fun:_ZN7Version20GetVersionFromStringERKSs
+  fun:_ZN17ExtensionsService24OnExternalExtensionFoundERKSsS1_RK8FilePathN9Extension8LocationE
+  fun:_ZN14RunnableMethodI17ExtensionsServiceMS0_FvRKSsS2_RK8FilePathN9Extension8LocationEE6Tuple4ISsSsS3_S7_EE3RunEv
+  fun:_ZN11MessageLoop7RunTaskEP4Task
+  fun:_ZN11MessageLoop21DeferOrRunPendingTaskERKNS_11PendingTaskE
+  fun:_ZN11MessageLoop6DoWorkEv
+  fun:_ZN4base18MessagePumpDefault3RunEPNS_11MessagePump8DelegateE
+  fun:_ZN11MessageLoop11RunInternalEv
+  fun:_ZN11MessageLoop10RunHandlerEv
+  fun:_ZN11MessageLoop13RunAllPendingEv
+  fun:_ZN46ExtensionsServiceTest_ExternalInstallPref_Test8TestBodyEv
+  fun:_ZN7testing4Test3RunEv
+  fun:_ZN7testing8internal12TestInfoImpl3RunEv
+  fun:_ZN7testing8internal12TestInfoImpl7RunTestEPNS_8TestInfoE
+  fun:_ZN7testing8TestCase3RunEv
+  fun:_ZN7testing8TestCase11RunTestCaseEPS0_
+  fun:_ZN7testing8internal12UnitTestImpl11RunAllTestsEv
+  fun:_ZN7testing8UnitTest3RunEv
+}