[AW] Update not exposed interfaces and re-enable layout tests

MediaDevices.getDisplayMedia is not exposed on Android
WebView. Update the not-webview-exposed.txt file and re-
enable tests.

BUG=1144241

Change-Id: Ic6167b0fa6ace6f9573306a773b52efa99d5b427
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2567162Reviewed-by: Richard Coles <torne@chromium.org>
Commit-Queue: Tim Volodine <timvolodine@chromium.org>
Cr-Commit-Position: refs/heads/master@{#833246}

android_webview/tools/system_webview_shell/layout_tests/src/org/chromium/webview_shell/test/WebViewLayoutTest.java

@@ -110,7 +110,6 @@ public class WebViewLayoutTest {
 
     // This is a non-failing test because it tends to require frequent rebaselines.
     @Test
-    @DisabledTest(message = "https://crbug.com/1144241")
     @MediumTest
     public void testGlobalInterfaceNoFail() throws Exception {
         runBlinkLayoutTest("webexposed/global-interface-listing.html",
@@ -148,7 +147,6 @@ public class WebViewLayoutTest {
     }
 
     @Test
-    @DisabledTest(message = "https://crbug.com/1144241")
     @MediumTest
     public void testWebViewExcludedInterfaces() throws Exception {
         ensureJsTestCopied();
@@ -195,7 +193,6 @@ public class WebViewLayoutTest {
     }
 
     @Test
-    @DisabledTest(message = "https://crbug.com/1144241")
     @MediumTest
     public void testWebViewIncludedStableInterfaces() throws Exception {
         ensureJsTestCopied();

android_webview/tools/system_webview_shell/test/data/webexposed/not-webview-exposed.txt

@@ -102,6 +102,7 @@ interface FileSystemWritableFileStream : WritableStream
 interface MediaDevices : EventTarget
     getter ondevicechange
     setter ondevicechange
+    method getDisplayMedia
 
 # WebAuthN API should not be exposed in WebView, crbug.com/828168
 interface AuthenticatorAssertionResponse : AuthenticatorResponse