Picture-in-Picture: disable browser tests on mash.

This will allow the browser tests to run on all platforms.

Bug: 845747
Change-Id: I07eb6fbd8240c5f559ef078538ffc047e7ab784c
Reviewed-on: https://chromium-review.googlesource.com/1105073Reviewed-by: apacible <apacible@chromium.org>
Commit-Queue: Mounir Lamouri <mlamouri@chromium.org>
Cr-Commit-Position: refs/heads/master@{#568815}

chrome/browser/picture_in_picture/picture_in_picture_window_controller_browsertest.cc

@@ -61,9 +61,6 @@ class PictureInPictureWindowControllerBrowserTest
   DISALLOW_COPY_AND_ASSIGN(PictureInPictureWindowControllerBrowserTest);
 };
 
-// TODO(845747): ChromeOS is hitting this DCHECK.
-#if !defined(OS_CHROMEOS)
-
 // Checks the creation of the window controller, as well as basic window
 // creation and visibility.
 IN_PROC_BROWSER_TEST_F(PictureInPictureWindowControllerBrowserTest,
@@ -660,5 +657,3 @@ IN_PROC_BROWSER_TEST_F(PictureInPictureWindowControllerBrowserTest,
   EXPECT_EQ(1u, active_web_contents->GetAllFrames().size());
   EXPECT_FALSE(window_controller()->GetWindowForTesting()->IsVisible());
 }
-
-#endif  // !defined(OS_CHROMEOS)

testing/buildbot/filters/mash.browser_tests.filter

@@ -275,4 +275,9 @@
 # supported in mash. crbug/834775
 -DisplayPrefsBrowserTest.*
 
+# Picture-in-Picture does not work with mash because VideoSurfaceLayer is
+# disabled.
+# https://crbug.com/827327
+-PictureInPictureWindowControllerBrowserTest.*
+
 # See comment at top of file regarding adding test exclusions.