[MemSheriff] Suppress uninit reads for Speech Recognition

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 5840dc1b296f68d237ded3ce5ae6518f0e2576c9..b1b0b4b60b5d692e46fc49e1df48010479dc47b3 100644
--- a/tools/valgrind/drmemory/suppressions.txt
+++ b/tools/valgrind/drmemory/suppressions.txt
@@ -667,3 +667,28 @@ blink_web.dll!blink::FrameView::removeFromAXObjectCache
 blink_web.dll!blink::FrameView::prepareForDetach
 blink_web.dll!blink::LocalFrame::setView
 blink_web.dll!blink::FrameTree::~FrameTree
+
+UNINITIALIZED READ
+name=http://crbug.com/422472 (a)
+shared_memory_support.dll!media::FromInterleavedInternal<>
+shared_memory_support.dll!media::AudioBus::FromInterleavedPartial
+shared_memory_support.dll!media::AudioBus::FromInterleaved
+content.dll!content::SpeechRecognitionAudioSink::OnData
+content.dll!content::MediaStreamAudioSinkOwner::OnData
+content.dll!content::WebRtcLocalAudioTrack::Capture
+*!content::SpeechRecognitionAudioSinkTest_RecognizerNotifiedOnSocket_Test::TestBody
+*!testing::internal::HandleExceptionsInMethodIfSupported<>
+
+UNINITIALIZED READ
+name=http://crbug.com/422472 (b)
+shared_memory_support.dll!media::FromInterleavedInternal<>
+...
+*!content::SpeechRecognitionAudioSinkTest::CaptureAudio
+*!content::SpeechRecognitionAudioSinkTest_OnReadyStateChangedOccured_Test::TestBody
+
+UNINITIALIZED READ
+name=http://crbug.com/422472 (c)
+shared_memory_support.dll!media::FromInterleavedInternal<>
+...
+*!content::SpeechRecognitionAudioSinkTest::CaptureAudio
+*!content::SpeechRecognitionAudioSinkTest_SyncSocketFailsSendingData_Test::TestBody