Add BlimpView to a Chrome tab when Blimp is enabled.

blimp/client/core/contents/blimp_contents_manager_unittest.cc

Index: blimp/client/core/contents/blimp_contents_manager_unittest.cc
diff --git a/blimp/client/core/contents/blimp_contents_manager_unittest.cc b/blimp/client/core/contents/blimp_contents_manager_unittest.cc
index 0a8f1f805f3c0cf10149b066d70bc96af583b290..5a4becd094408254813835ffe9e08f44b0f1eb71 100644
--- a/blimp/client/core/contents/blimp_contents_manager_unittest.cc
+++ b/blimp/client/core/contents/blimp_contents_manager_unittest.cc
@@ -42,7 +42,7 @@ TEST(BlimpContentsManagerUnittest, GetExistingBlimpContents) {
 
   EXPECT_CALL(tab_control_feature, CreateTab(_)).Times(1);
   std::unique_ptr<BlimpContentsImpl> blimp_contents =
-      blimp_contents_manager.CreateBlimpContents();
+      blimp_contents_manager.CreateBlimpContents(nullptr);
   int id = blimp_contents->id();
   BlimpContentsImpl* existing_contents =
       blimp_contents_manager.GetBlimpContents(id);
@@ -69,7 +69,7 @@ TEST(BlimpContentsManagerUnittest, GetDestroyedBlimpContents) {
 
   EXPECT_CALL(tab_control_feature, CreateTab(_)).Times(1);
   std::unique_ptr<BlimpContentsImpl> blimp_contents =
-      blimp_contents_manager.CreateBlimpContents();
+      blimp_contents_manager.CreateBlimpContents(nullptr);
   id = blimp_contents.get()->id();
   BlimpContentsImpl* existing_contents =
       blimp_contents_manager.GetBlimpContents(id);