Android: Remove more unneeded bits.

chrome/browser/devtools/devtools_ui_bindings.cc

Index: chrome/browser/devtools/devtools_ui_bindings.cc
diff --git a/chrome/browser/devtools/devtools_ui_bindings.cc b/chrome/browser/devtools/devtools_ui_bindings.cc
index ae45cdbd45306b20c654adb1e1dbb58c90cc0f8e..5380704438effcc13bc8f4316f57637a74f1e6cc 100644
--- a/chrome/browser/devtools/devtools_ui_bindings.cc
+++ b/chrome/browser/devtools/devtools_ui_bindings.cc
@@ -15,7 +15,6 @@
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/chrome_page_zoom.h"
 #include "chrome/browser/devtools/devtools_target_impl.h"
-#include "chrome/browser/extensions/chrome_extension_web_contents_observer.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/infobars/infobar_service.h"
 #include "chrome/browser/profiles/profile.h"
@@ -53,6 +52,10 @@
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 
+#if defined(ENABLE_EXTENSIONS)
+#include "chrome/browser/extensions/chrome_extension_web_contents_observer.h"
+#endif
+
 using base::DictionaryValue;
 using content::BrowserThread;
 
@@ -317,8 +320,10 @@ DevToolsUIBindings::DevToolsUIBindings(content::WebContents* web_contents,
       web_contents_, this));
   file_helper_.reset(new DevToolsFileHelper(web_contents_, profile_));
   file_system_indexer_ = new DevToolsFileSystemIndexer();
+#if defined(ENABLE_EXTENSIONS)
   extensions::ChromeExtensionWebContentsObserver::CreateForWebContents(
       web_contents_);
+#endif
 
   web_contents_->GetController().LoadURL(
       url, content::Referrer(),