Update from https://crrev.com/312398

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 3b1eaadeaf350f76c7ad43b3121652778c91f3c7..f9a0d36a275be81f4f89ffc348dabe02f51c8d5b 100644
--- a/tools/valgrind/drmemory/suppressions.txt
+++ b/tools/valgrind/drmemory/suppressions.txt
@@ -705,19 +705,14 @@ content.dll!base::internal::BindState<>::`scalar deleting destructor'
 base.dll!scoped_refptr<>::Release
 base.dll!base::internal::CallbackBase::~CallbackBase
 
-UNADDRESSABLE ACCESS
-name=https://crbug.com/447788
-...
-*!gpu::gles2::GLES2ImplementationTest_TexImage3DSingleCommand_Test::TestBody
-
-UNADDRESSABLE ACCESS
-name=https://crbug.com/448189
-aura.dll!aura::GetDeviceScaleFactorFromDisplay
-aura.dll!aura::WindowTreeHost::InitCompositor
-aura.dll!aura::WindowTreeHost::InitHost
-ash.dll!ash::DisplayController::AddWindowTreeHostForDisplay
-ash.dll!ash::DisplayController::CreatePrimaryHost
-ash.dll!ash::Shell::Init
-ash.dll!ash::Shell::CreateInstance
-*!ash::test::AshTestHelper::SetUp
-*!ash::test::AshTestBase::SetUp
+HANDLE LEAK
+name=http://crbug.com/449989
+system call NtOpenProcess
+KERNELBASE.dll!OpenProcess
+base.dll!base::Process::OpenWithExtraPriviles
+content.dll!content::BrowserMessageFilter::Internal::OnChannelConnected
+...
+ipc.dll!IPC::ChannelWin::HandleInternalMessage
+ipc.dll!IPC::internal::ChannelReader::DispatchInputData
+ipc.dll!IPC::internal::ChannelReader::AsyncReadComplete
+ipc.dll!IPC::ChannelWin::OnIOCompleted