Convert //content/browser from scoped_ptr to std::unique_ptr

content/browser/browser_plugin/browser_plugin_guest.h

Index: content/browser/browser_plugin/browser_plugin_guest.h
diff --git a/content/browser/browser_plugin/browser_plugin_guest.h b/content/browser/browser_plugin/browser_plugin_guest.h
index 9158709ff86c3c1999fc2787b52032d64896ce94..8313f0f25fcbdd63041eb3e4198f2314c44a9213 100644
--- a/content/browser/browser_plugin/browser_plugin_guest.h
+++ b/content/browser/browser_plugin/browser_plugin_guest.h
@@ -386,7 +386,7 @@ class CONTENT_EXPORT BrowserPluginGuest : public GuestHost,
   // The last tooltip that was set with SetTooltipText().
   base::string16 current_tooltip_text_;
 
-  scoped_ptr<EmbedderVisibilityObserver> embedder_visibility_observer_;
+  std::unique_ptr<EmbedderVisibilityObserver> embedder_visibility_observer_;
   WebContentsImpl* owner_web_contents_;
 
   // Indicates whether this guest has been attached to a container.
@@ -425,7 +425,7 @@ class CONTENT_EXPORT BrowserPluginGuest : public GuestHost,
 
   // Text input type states.
   // Using scoped_ptr to avoid including the header file: view_messages.h.
-  scoped_ptr<const TextInputState> last_text_input_state_;
+  std::unique_ptr<const TextInputState> last_text_input_state_;
 
   // The is the routing ID for a swapped out RenderView for the guest
   // WebContents in the embedder's process.