Disable flaky WebViewLayoutTests

This CL disables the following tests:
* WebViewLayoutTest#testWebViewIncludedStableInterfaces
* WebViewLayoutTest#testGlobalInterfaceNoFail
* WebViewLayoutTest#testWebViewExcludedInterfaces

Because they are flaky on builder:
* android-pie-x86-rel

TBR=timvolodine@chromium.org

Bug: 1144241
Change-Id: I15402e2a0169488c9b7500e3bf938ccb66af9ca1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2510909Reviewed-by: Salvador Guerrero <salg@google.com>
Commit-Queue: Salvador Guerrero <salg@google.com>
Cr-Commit-Position: refs/heads/master@{#822749}

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

@@ -110,6 +110,7 @@ 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",
@@ -147,6 +148,7 @@ public class WebViewLayoutTest {
     }
 
     @Test
+    @DisabledTest(message = "https://crbug.com/1144241")
     @MediumTest
     public void testWebViewExcludedInterfaces() throws Exception {
         ensureJsTestCopied();
@@ -193,6 +195,7 @@ public class WebViewLayoutTest {
     }
 
     @Test
+    @DisabledTest(message = "https://crbug.com/1144241")
     @MediumTest
     public void testWebViewIncludedStableInterfaces() throws Exception {
         ensureJsTestCopied();