Suppress handle leaks from mojo::edk::ChildProcessLaunched

tools/valgrind/drmemory/suppressions.txt

Index: tools/valgrind/drmemory/suppressions.txt
diff --git a/tools/valgrind/drmemory/suppressions.txt b/tools/valgrind/drmemory/suppressions.txt
index 79c124a3d381d8df3475ea9b3e8b16a390f43535..8ec6ca35dd632c00f1d86adf1d0635f5b075d150 100644
--- a/tools/valgrind/drmemory/suppressions.txt
+++ b/tools/valgrind/drmemory/suppressions.txt
@@ -786,3 +786,29 @@ content.dll!content::BrowserThreadImpl::ProcessLauncherThreadRun
 content.dll!content::BrowserThreadImpl::Run
 base.dll!base::Thread::ThreadMain
 base.dll!base::`anonymous namespace'::ThreadFunc
+
+HANDLE LEAK
+name=bug_561803_a
+system call NtCreateNamedPipeFile
+*!CreateNamedPipeW
+*!mojo::edk::PlatformChannelPair::PlatformChannelPair
+...
+*!mojo::edk::ChildProcessLaunched
+*!mojo::embedder::ChildProcessLaunched
+*!content::*::OnProcessLaunched
+*!content::ChildProcessLauncher::Notify
+*!content::ChildProcessLauncher::DidLaunch
+*!base::internal::InvokeHelper<>::MakeItSo
+
+HANDLE LEAK
+name=bug_561803_b
+system call NtDuplicateObject
+*!DuplicateHandle
+*!DuplicateHandle
+*!mojo::edk::ChildBrokerHost::ChildBrokerHost
+*!mojo::edk::ChildProcessLaunched
+*!mojo::embedder::ChildProcessLaunched
+...
+*!content::ChildProcessLauncher::Notify
+*!content::ChildProcessLauncher::DidLaunch
+*!base::internal::InvokeHelper<>::MakeItSo