Update from https://crrev.com/306655

tools/valgrind/memcheck/suppressions_linux.txt

Index: tools/valgrind/memcheck/suppressions_linux.txt
diff --git a/tools/valgrind/memcheck/suppressions_linux.txt b/tools/valgrind/memcheck/suppressions_linux.txt
index 6ce46070e6f01076ebe28cfa8944f0ae6860e9d7..dae393672a4f088522322e3664c2601f8278ba64 100644
--- a/tools/valgrind/memcheck/suppressions_linux.txt
+++ b/tools/valgrind/memcheck/suppressions_linux.txt
@@ -21,4 +21,34 @@
 # in our own code, or stuff that is so trivial it's not worth fixing.
 
 # 3. Suppressions for real chromium bugs that are not yet fixed.
-
+{
+   bug_436253
+   Memcheck:Overlap
+   fun:memcpy@@GLIBC_2.14
+   fun:_ZN7content14WebPreferencesaSERKS0_
+   fun:_ZN7content14RenderViewImpl22OnUpdateWebPreferencesERKNS_14WebPreferencesE
+   fun:_ZN7content14RenderViewImpl20SetWebkitPreferencesERKNS_14WebPreferencesE
+   fun:_ZThn784_N7content14RenderViewImpl20SetWebkitPreferencesERKNS_14WebPreferencesE
+   fun:_ZN7content16WebKitTestRunner5ResetEv
+}
+{
+   bug_436292
+   Memcheck:Param
+   sendmsg(msg.msg_iov[0])
+   ...
+   fun:MojoWriteMessage
+   fun:_ZN3IPC8internal13MessageReader4SendE10scoped_ptrINS_7MessageEN4base14DefaultDeleterIS3_EEE
+   fun:_ZN3IPC11ChannelMojo4SendEPNS_7MessageE
+   fun:_ZN7content20BrowserMessageFilter4SendEPN3IPC7MessageE
+   fun:_ZN7content17AudioRendererHost18DoCompleteCreationEi
+}
+{
+   bug_436292_b
+   Memcheck:Param
+   sendmsg(msg.msg_iov[0])
+   ...
+   fun:MojoWriteMessage
+   fun:_ZN3IPC8internal13MessageReader4SendE10scoped_ptrINS_7MessageEN4base14DefaultDeleterIS3_EEE
+   fun:_ZN3IPC11ChannelMojo17InitMessageReaderEN4mojo16ScopedHandleBaseINS1_17MessagePipeHandleEEEi
+   fun:_ZN3IPC12_GLOBAL__N_117ServerChannelMojo27ClientChannelWasInitializedEi
+}