Enable overlay scrollbars on ChromeOS

content/browser/site_per_process_browsertest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/site_per_process_browsertest.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 51 matching lines @@
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/WebKit/public/platform/WebInsecureRequestPolicy.h"
 #include "third_party/WebKit/public/web/WebInputEvent.h"
 #include "third_party/WebKit/public/web/WebSandboxFlags.h"
 #include "ui/display/display_switches.h"
 #include "ui/display/screen.h"
 #include "ui/events/event.h"
 #include "ui/events/event_utils.h"
 #include "ui/events/latency_info.h"
 #include "ui/gfx/geometry/point.h"
+#include "ui/native_theme/native_theme_switches.h"
 
 #if defined(USE_AURA)
 #include "content/browser/renderer_host/render_widget_host_view_aura.h"
 #endif
 
 #if defined(OS_MACOSX)
 #include "ui/base/test/scoped_preferred_scroller_style_mac.h"
 #endif
 
 namespace content {
@@ skipping 463 matching lines @@
 SitePerProcessBrowserTest::SitePerProcessBrowserTest() {
 };
 
 std::string SitePerProcessBrowserTest::DepictFrameTree(FrameTreeNode* node) {
   return visualizer_.DepictFrameTree(node);
 }
 
 void SitePerProcessBrowserTest::SetUpCommandLine(
     base::CommandLine* command_line) {
   IsolateAllSitesForTesting(command_line);
+#if !defined(OS_ANDROID)
+  // TODO(bokan): Needed for scrollability check in
+  // FrameOwnerPropertiesPropagationScrolling. crbug.com/662196.
+  command_line->AppendSwitch(switches::kDisableOverlayScrollbar);
+#endif
 };
 
 void SitePerProcessBrowserTest::SetUpOnMainThread() {
   host_resolver()->AddRule("*", "127.0.0.1");
   ASSERT_TRUE(embedded_test_server()->Start());
   SetupCrossSiteRedirector(embedded_test_server());
 }
 
 //
 // SitePerProcessHighDPIBrowserTest
@@ skipping 2394 matching lines @@
     navigation_observer.Wait();
     EXPECT_TRUE(observer.last_navigation_succeeded());
     EXPECT_EQ(cross_site_url, observer.last_navigation_url());
     EXPECT_EQ(0U, child->child_count());
   }
 }
 
 // Verify that "scrolling" property on frame elements propagates to child frames
 // correctly.
 // Does not work on android since android has scrollbars overlayed.
+// TODO(bokan): Pretty soon most/all platforms will use overlay scrollbars. This
+// test should find a better way to check for scrollability. crbug.com/662196.
 #if defined(OS_ANDROID)
 #define MAYBE_FrameOwnerPropertiesPropagationScrolling \
         DISABLED_FrameOwnerPropertiesPropagationScrolling
 #else
 #define MAYBE_FrameOwnerPropertiesPropagationScrolling \
         FrameOwnerPropertiesPropagationScrolling
 #endif
 IN_PROC_BROWSER_TEST_F(SitePerProcessBrowserTest,
                        MAYBE_FrameOwnerPropertiesPropagationScrolling) {
 #if defined(OS_MACOSX)
@@ skipping 5547 matching lines @@
   EXPECT_TRUE(NavigateToURL(shell(), b_url));
 
   base::string16 expected_title(base::UTF8ToUTF16("foo"));
   TitleWatcher title_watcher(popup2->web_contents(), expected_title);
   EXPECT_TRUE(ExecuteScript(
       shell(), "window.open('','popup2').postMessage('foo', '*');"));
   EXPECT_EQ(expected_title, title_watcher.WaitAndGetTitle());
 }
 
 }  // namespace content