Support new --arc-availability flag.

components/arc/arc_util_unittest.cc

Index: components/arc/arc_util_unittest.cc
diff --git a/components/arc/arc_util_unittest.cc b/components/arc/arc_util_unittest.cc
index ff3f6113ea3934aec56167e133f45aba62c499d0..3a89362ac20dd4ae35b5d4919869928fcb41e291 100644
--- a/components/arc/arc_util_unittest.cc
+++ b/components/arc/arc_util_unittest.cc
@@ -71,6 +71,22 @@ TEST_F(ArcUtilTest, IsArcAvailable_Installed) {
     ScopedArcFeature feature(false);
     EXPECT_FALSE(IsArcAvailable());
   }
+

[Yusuke Sato, 2017/02/02 18:14:06]

can you test "none"?

[hidehiko, 2017/02/03 15:37:42]

Done.

+  // If ARC is installed, IsArcAvailable() should return true when EnableARC
+  // feature is set.
+  command_line->InitFromArgv({"", "--arc-availability=installed"});
+
+  // Not available, by-default, too.
+  EXPECT_FALSE(IsArcAvailable());
+
+  {
+    ScopedArcFeature feature(true);
+    EXPECT_TRUE(IsArcAvailable());
+  }
+  {
+    ScopedArcFeature feature(false);
+    EXPECT_FALSE(IsArcAvailable());
+  }
 }
 
 TEST_F(ArcUtilTest, IsArcAvailable_OfficialSupport) {
@@ -78,6 +94,9 @@ TEST_F(ArcUtilTest, IsArcAvailable_OfficialSupport) {
   auto* command_line = base::CommandLine::ForCurrentProcess();
   command_line->InitFromArgv({"", "--enable-arc"});
   EXPECT_TRUE(IsArcAvailable());
+
+  command_line->InitFromArgv({"", "--arc-availability=official-support"});
+  EXPECT_TRUE(IsArcAvailable());
 }
 
 // TODO(hidehiko): Add test for IsArcKioskMode().