Add BlimpView to a Chrome tab when Blimp is enabled.

blimp/client/core/contents/blimp_contents_manager.cc

Index: blimp/client/core/contents/blimp_contents_manager.cc
diff --git a/blimp/client/core/contents/blimp_contents_manager.cc b/blimp/client/core/contents/blimp_contents_manager.cc
index 6778bb18fd3680cab3f7b3eb541944fd5375531d..52214d4e6838650b6f798e42033feeb566f01b35 100644
--- a/blimp/client/core/contents/blimp_contents_manager.cc
+++ b/blimp/client/core/contents/blimp_contents_manager.cc
@@ -63,7 +63,8 @@ BlimpContentsManager::BlimpContentsManager(
 
 BlimpContentsManager::~BlimpContentsManager() {}
 
-std::unique_ptr<BlimpContentsImpl> BlimpContentsManager::CreateBlimpContents() {
+std::unique_ptr<BlimpContentsImpl> BlimpContentsManager::CreateBlimpContents(
+    gfx::NativeWindow window) {
   if (tab_exists_) return nullptr;
   tab_exists_ = true;
 
@@ -71,8 +72,8 @@ std::unique_ptr<BlimpContentsImpl> BlimpContentsManager::CreateBlimpContents() {
 
   std::unique_ptr<BlimpContentsImpl> new_contents =
       base::MakeUnique<BlimpContentsImpl>(
-          id, blimp_compositor_dependencies_, ime_feature_, navigation_feature_,
-          render_widget_feature_, tab_control_feature_);
+          id, window, blimp_compositor_dependencies_, ime_feature_,
+          navigation_feature_, render_widget_feature_, tab_control_feature_);
 
   // Create an observer entry for the contents.
   std::unique_ptr<BlimpContentsDeletionObserver> observer =