Disable flaky AwSettingsTest#testCacheModeWithBlockedNetworkLoads

Test is flaky on Lollipop Tablet Tester

TBR=boliu@chromium.org

Bug: 1010034
Change-Id: Ie0de96720fe2396da9032b1cc745445c06dfab61
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1851707Reviewed-by: Juan Antonio Navarro Pérez <perezju@chromium.org>
Commit-Queue: Juan Antonio Navarro Pérez <perezju@chromium.org>
Cr-Commit-Position: refs/heads/master@{#704537}

android_webview/javatests/src/org/chromium/android_webview/test/AwSettingsTest.java

@@ -2403,6 +2403,7 @@ public class AwSettingsTest {
     @Test
     @SmallTest
     @Feature({"AndroidWebView", "Preferences"})
+    @DisabledTest(message = "crbug.com/1010034")
     // As our implementation of network loads blocking uses the same net::URLRequest settings, make
     // sure that setting cache mode doesn't accidentally enable network loads.  The reference
     // behaviour is that when network loads are blocked, setting cache mode has no effect.