Move guest_view to extensions.

extensions/browser/guest_view/guest_view_base.h

Index: extensions/browser/guest_view/guest_view_base.h
diff --git a/chrome/browser/guest_view/guest_view_base.h b/extensions/browser/guest_view/guest_view_base.h
similarity index 98%
rename from chrome/browser/guest_view/guest_view_base.h
rename to extensions/browser/guest_view/guest_view_base.h
index cbcf9cf0faf32034d31b9ae210e80d73795282f2..2360ee0bad1fb826197cccc751eaaa2fe8778523 100644
--- a/chrome/browser/guest_view/guest_view_base.h
+++ b/extensions/browser/guest_view/guest_view_base.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CHROME_BROWSER_GUEST_VIEW_GUEST_VIEW_BASE_H_
-#define CHROME_BROWSER_GUEST_VIEW_GUEST_VIEW_BASE_H_
+#ifndef EXTENSIONS_BROWSER_GUEST_VIEW_GUEST_VIEW_BASE_H_
+#define EXTENSIONS_BROWSER_GUEST_VIEW_GUEST_VIEW_BASE_H_
 
 #include <queue>
 
@@ -17,6 +17,8 @@
 
 struct RendererContentSettingRules;
 
+namespace extensions {
+
 // A GuestViewBase is the base class browser-side API implementation for a
 // <*view> tag. GuestViewBase maintains an association between a guest
 // WebContents and an embedder WebContents. It receives events issued from
@@ -328,4 +330,6 @@ class GuestViewBase : public content::BrowserPluginGuestDelegate,
   DISALLOW_COPY_AND_ASSIGN(GuestViewBase);
 };
 
-#endif  // CHROME_BROWSER_GUEST_VIEW_GUEST_VIEW_BASE_H_
+}  // namespace extensions
+
+#endif  // EXTENSIONS_BROWSER_GUEST_VIEW_GUEST_VIEW_BASE_H_