Cleanup content:: prefixes in GuestView files.

extensions/browser/guest_view/extension_options/extension_options_guest.cc

Index: extensions/browser/guest_view/extension_options/extension_options_guest.cc
diff --git a/extensions/browser/guest_view/extension_options/extension_options_guest.cc b/extensions/browser/guest_view/extension_options/extension_options_guest.cc
index 3b40a5dac1aa375783686f7606a670f20d7c3572..cfdb5cf8de6529416ea75b177e6316daa3dc6fee 100644
--- a/extensions/browser/guest_view/extension_options/extension_options_guest.cc
+++ b/extensions/browser/guest_view/extension_options/extension_options_guest.cc
@@ -38,20 +38,17 @@ namespace extensions {
 // static
 const char ExtensionOptionsGuest::Type[] = "extensionoptions";
 
-ExtensionOptionsGuest::ExtensionOptionsGuest(
-    content::WebContents* owner_web_contents)
+ExtensionOptionsGuest::ExtensionOptionsGuest(WebContents* owner_web_contents)
     : GuestView<ExtensionOptionsGuest>(owner_web_contents),
       extension_options_guest_delegate_(
           extensions::ExtensionsAPIClient::Get()
-              ->CreateExtensionOptionsGuestDelegate(this)) {
-}
+              ->CreateExtensionOptionsGuestDelegate(this)) {}
 
 ExtensionOptionsGuest::~ExtensionOptionsGuest() {
 }
 
 // static
-GuestViewBase* ExtensionOptionsGuest::Create(
-    content::WebContents* owner_web_contents) {
+GuestViewBase* ExtensionOptionsGuest::Create(WebContents* owner_web_contents) {
   return new ExtensionOptionsGuest(owner_web_contents);
 }
 
@@ -155,8 +152,8 @@ bool ExtensionOptionsGuest::ShouldHandleFindRequestsForEmbedder() const {
   return true;
 }
 
-content::WebContents* ExtensionOptionsGuest::OpenURLFromTab(
-    content::WebContents* source,
+WebContents* ExtensionOptionsGuest::OpenURLFromTab(
+    WebContents* source,
     const content::OpenURLParams& params) {
   if (!extension_options_guest_delegate_)
     return nullptr;
@@ -177,7 +174,7 @@ content::WebContents* ExtensionOptionsGuest::OpenURLFromTab(
   return extension_options_guest_delegate_->OpenURLInNewTab(params);
 }
 
-void ExtensionOptionsGuest::CloseContents(content::WebContents* source) {
+void ExtensionOptionsGuest::CloseContents(WebContents* source) {
   DispatchEventToView(
       new GuestViewEvent(extension_options_internal::OnClose::kEventName,
                          make_scoped_ptr(new base::DictionaryValue())));
@@ -192,7 +189,7 @@ bool ExtensionOptionsGuest::HandleContextMenu(
 }
 
 bool ExtensionOptionsGuest::ShouldCreateWebContents(
-    content::WebContents* web_contents,
+    WebContents* web_contents,
     int route_id,
     int main_frame_route_id,
     WindowContainerType window_container_type,