[MemSheriff] Exclude/suppress failing tests on DrMemory.

BUG=446256, 451991, 451992, 451988, 293125, 451983
TBR=thestig@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/875923002

Cr-Commit-Position: refs/heads/master@{#313064}

tools/valgrind/drmemory/suppressions_full.txt

@@ -1889,3 +1889,7 @@ name=bug_436131_c
 *!ash::test::ShelfViewTest_OverflowBubbleSize_Test::TestBody
 *!testing::internal::HandleExceptionsInMethodIfSupported<>
 
+UNINITIALIZED READ
+name=bug_446256
+*!`anonymous namespace'::GraphicsContextTest_trackDisplayListRecording_Test::TestBody
+*!testing::internal::HandleExceptionsInMethodIfSupported<>

tools/valgrind/gtest_exclude/browser_tests.gtest-drmemory.txt

@@ -19,3 +19,10 @@ SSLUITest.TestWSSInvalidCertAndGoForward
 
 # http://crbug.com/403007
 WorkerDevToolsSanityTest.InspectSharedWorker
+
+# http://crbug.com/451991
+AppViewTest.TestAppViewMultipleConnects
+BrowserViewTest.DevToolsUpdatesBrowserWindow
+
+# http://crbug.com/451992
+ExtensionLoadingTest.UpgradeAfterNavigatingFromOverriddenNewTabPage

tools/valgrind/gtest_exclude/cc_unittests.gtest-drmemory.txt

+# http://crbug.com/451988
+LayerTreeHostPictureTestTwinLayer.RunSingleThread_DirectRenderer_ImplSidePaint

tools/valgrind/gtest_exclude/content_browsertests.gtest-drmemory.txt

@@ -20,3 +20,8 @@ WebRtcBrowserTest.CallWithDataAndMedia
 ServiceWorkerVersionBrowserTest.Activate_NoEventListener
 ServiceWorkerBrowserTest.ImportsBustMemcache
 
+# http://crbug.com/293125
+WebRtcBrowserTest.CanMakeEmptyCallThenAddStreamsAndRenegotiate
+
+# http://crbug.com/451983
+DumpAccessibilityEventsTest.AccessibilityEventsTextChanged