Add BlimpView to a Chrome tab when Blimp is enabled.

blimp/client/core/contents/blimp_contents_view_android.h

Index: blimp/client/core/contents/blimp_contents_view_android.h
diff --git a/blimp/client/core/contents/blimp_contents_view_android.h b/blimp/client/core/contents/blimp_contents_view_android.h
index 4feaad59034233d4f319999f3d1546bb27154c51..aaa40ee5352a4a5c2522ef461fa4d44a4aad61a1 100644
--- a/blimp/client/core/contents/blimp_contents_view_android.h
+++ b/blimp/client/core/contents/blimp_contents_view_android.h
@@ -11,17 +11,25 @@
 
 namespace blimp {
 namespace client {
-class BlimpContentsImplAndroid;
+class BlimpContentsImpl;
+class BlimpView;
 
 class BlimpContentsViewAndroid : public BlimpContentsView {
  public:
-  explicit BlimpContentsViewAndroid(BlimpContentsImplAndroid* blimp_contents);
+  explicit BlimpContentsViewAndroid(BlimpContentsImpl* blimp_contents);
+  ~BlimpContentsViewAndroid() override;
 
   // BlimpContentsView implementation.
   gfx::NativeView GetNativeView() override;
 
+  // Returns the JNI-bridge for the Android View for this BlimpContentsView.
+  BlimpView* GetBlimpView();
+
  private:
-  ui::ViewAndroid view_;
+  std::unique_ptr<ui::ViewAndroid> view_;
+
+  // The JNI-bridge for the Android View for this BlimpContentsView.
+  std::unique_ptr<BlimpView> blimp_view_;
 
   DISALLOW_COPY_AND_ASSIGN(BlimpContentsViewAndroid);
 };