Revert "Content_Browsertest with --enable-viz"

This reverts commit df214af3.

Reason for revert: Failing on chromium.chromiumos waterfall: https://build.chromium.org/p/chromium.chromiumos/builders/Linux%20ChromiumOS%20Tests%20%281%29/builds/46590

Original change's description:
> Content_Browsertest with --enable-viz
> 
> This will enable content_browsertests --enable-viz on the
> chromium_chromeos_rel_ng bot.
> 
> The filter file is a list of tests which fail, as they traditionally rely on
> information that is now in a different process. We'll bring more online as we
> create the appropriate test apis.
> 
> TBR=sky@chromium.org
> TEST=viz_content_browsertests
> 
> Bug: 760181
> Change-Id: I4e015d93aec3526c0f0fe2aa0cccafff998fc5a7
> Reviewed-on: https://chromium-review.googlesource.com/758603
> Commit-Queue: Jonathan Ross <jonross@chromium.org>
> Reviewed-by: Jonathan Ross <jonross@chromium.org>
> Reviewed-by: Scott Violet <sky@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#514969}

TBR=sky@chromium.org,jonross@chromium.org

Change-Id: Iffeb787272a63c3fb447e2f149c01274e7c6675d
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 760181
Reviewed-on: https://chromium-review.googlesource.com/759656Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Commit-Queue: Steven Bennetts <stevenjb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#515058}

testing/buildbot/chromium.chromiumos.json

@@ -168,20 +168,6 @@
         },
         "test": "compositor_unittests"
       },
-      {
-        "args": [
-          "--enable-viz",
-          "--ozone-platform=headless",
-          "--override-use-software-gl-for-tests",
-          "--test-launcher-filter-file=../../testing/buildbot/filters/viz.content_browsertests.filter"
-        ],
-        "name": "viz_content_browsertests",
-        "swarming": {
-          "can_use_on_swarming_builders": true,
-          "shards": 2
-        },
-        "test": "content_browsertests"
-      },
       {
         "swarming": {
           "can_use_on_swarming_builders": true,

testing/buildbot/chromium.fyi.json

@@ -4393,7 +4393,8 @@
         "name": "viz_content_browsertests",
         "swarming": {
           "can_use_on_swarming_builders": true,
-          "shards": 2
+          "hard_timeout": 1500,
+          "shards": 5
         },
         "test": "content_browsertests"
       },

testing/buildbot/filters/BUILD.gn

@@ -48,7 +48,6 @@ source_set("content_browsertests_filters") {
     "//testing/buildbot/filters/site-per-process.content_browsertests.filter",
     "//testing/buildbot/filters/mojo.fyi.mus.content_browsertests.filter",
     "//testing/buildbot/filters/mojo.fyi.viz.content_browsertests.filter",
-    "//testing/buildbot/filters/viz.content_browsertests.filter",
   ]
 }
 

testing/buildbot/filters/mojo.fyi.viz.content_browsertests.filter

-# TODO: further define failures, master issue http://crbug.com/760181
 -CaptureScreenshotTest.*
 -CompositedScrollingBrowserTest.*
 -ContentBrowserTestSanityTest.*

testing/buildbot/filters/viz.content_browsertests.filter

-# TODO: further define failures, master issue http://crbug.com/760181
--CaptureScreenshotTest.*
--CompositedScrollingBrowserTest.*
--ContentBrowserTestSanityTest.*
--CrossProcessFrameTreeBrowserTest.*
--CrossSiteResourceHandlerTest.*
--CrossSiteTransferTest/CrossSiteTransferTest.*
--DevToolsProtocolTest.*
--DomSerializerTests.*
--DownloadContentTest.*
--DumpAccessibilityTreeTest.*
--FindRequestManagerTests/FindRequestManagerTest.*
--GLAndSoftwareCompositing/CompositingRenderWidgetHostViewBrowserTest.*
--GLAndSoftwareCompositing/CompositingRenderWidgetHostViewBrowserTestHiDPI.*
--GLAndSoftwareCompositing/CompositingRenderWidgetHostViewBrowserTestTabCapture.*
--GLAndSoftwareCompositing/CompositingRenderWidgetHostViewBrowserTestTabCaptureHighDPI.*
--ImageTransportFactoryTearDownBrowserTest.*
--IndexedDBBrowserTestSingleProcess.*
--IsolateIcelandFrameTreeBrowserTest.*
--IsolatedDevToolsProtocolTest.*
--IsolatedOriginTest.*
--MHTMLGenerationSitePerProcessTest.*
--MainThreadEventQueueBrowserTest.*
--NonBlockingEventBrowserTest.*
--OpenedByDOMTest.*
--PointerLockBrowserTest.*
--RenderFrameHostManagerTest.*
--RenderThreadImplDiscardableMemoryBrowserTest.*
--RenderViewBrowserTest.*
--RenderWidgetHostViewBrowserTestBase.*
--RenderWidgetHostViewChildFrameTest.*
--RequestDelayingSitePerProcessBrowserTest.*
--ResourceFetcherTests.*
--SavableResourcesTest.*
--ScreenOrientationOOPIFBrowserTest.*
--ScrollLatencyBrowserTest.*
--SecurityExploitBrowserTest.*
--SitePerProcessAccessibilityBrowserTest.*
--SitePerProcessBrowserTest.*
--SitePerProcessDevToolsBrowserTest.*
--SitePerProcessDevToolsProtocolTest.*
--SitePerProcessEmbedderCSPEnforcementBrowserTest.*
--SitePerProcessFeaturePolicyBrowserTest.*
--SitePerProcessFeaturePolicyDisabledBrowserTest.*
--SitePerProcessGestureBrowserTest.*
--SitePerProcessHighDPIBrowserTest.*
--SitePerProcessIgnoreCertErrorsBrowserTest.*
--SitePerProcessMouseWheelBrowserTest.*
--SnapshotBrowserTest.*
--TopDocumentIsolationTest.*
--TouchActionBrowserTest.*
--TouchSelectionControllerClientAuraScaleFactorTest.*
--TouchSelectionControllerClientAuraTest.*
--TouchSelectionForCrossProcessFramesTests/TouchSelectionControllerClientAuraSiteIsolationTest.*
--WakeLockTest.*
--WheelScrollLatchingBrowserTest.*
--WheelScrollLatchingDisabledBrowserTest.*