Implement NativeViewHostAura::InstallClip.

content/browser/web_contents/web_contents_view_aura_browsertest.cc

Index: content/browser/web_contents/web_contents_view_aura_browsertest.cc
diff --git a/content/browser/web_contents/web_contents_view_aura_browsertest.cc b/content/browser/web_contents/web_contents_view_aura_browsertest.cc
index 492ab7b49a91cc12a45f1c53c721a09b607f7f13..fd2f2fab033997682b5e57832b8a7a15e2c685ec 100644
--- a/content/browser/web_contents/web_contents_view_aura_browsertest.cc
+++ b/content/browser/web_contents/web_contents_view_aura_browsertest.cc
@@ -27,6 +27,7 @@
 #include "content/public/test/test_renderer_host.h"
 #include "content/public/test/test_utils.h"
 #include "content/shell/browser/shell.h"
+#include "ui/aura/client/aura_constants.h"
 #include "ui/aura/test/event_generator.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_tree_host.h"
@@ -687,4 +688,15 @@ IN_PROC_BROWSER_TEST_F(WebContentsViewAuraTest, HideContentOnParenHide) {
   EXPECT_TRUE(web_contents->should_normally_be_visible());
 }
 
+// Verify that hiding a parent of the renderer will hide the content too.

[sky, 2014/06/20 15:10:37]

I don't think this test provides much value, go ahead and nuke it. To really
test the code you're changing requires it to be refactored into a standalone
test. If we have coverage through other tests, no need to write another.

+IN_PROC_BROWSER_TEST_F(WebContentsViewAuraTest, HostWindowKey) {
+  ASSERT_NO_FATAL_FAILURE(StartTestWithPage("files/title1.html"));
+  WebContentsImpl* web_contents =
+      static_cast<WebContentsImpl*>(shell()->web_contents());
+
+  EXPECT_EQ(shell()->window(),
+            web_contents->GetNativeView()->GetProperty(
+                aura::client::kHostWindowKey));
+}
+
 }  // namespace content