Establish /extensions directory and move URLPattern there.

This doesn't create an extensions gyp target, or a module with a public API.
It does set of DEPS rules and seems like it will make it easier for people to
write correctly layered code today, while we are in transition.

BUG=159265
[email protected]

Review URL: https://codereview.chromium.org/11410015

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@167454 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/extensions/extension_url_rewrite_browsertest.cc b/chrome/browser/extensions/extension_url_rewrite_browsertest.cc
index cfbabd8..166c4071 100644
--- a/chrome/browser/extensions/extension_url_rewrite_browsertest.cc
+++ b/chrome/browser/extensions/extension_url_rewrite_browsertest.cc
@@ -18,6 +18,7 @@
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/web_contents.h"
+#include "extensions/common/constants.h"
 #include "googleurl/src/gurl.h"
 
 using content::NavigationEntry;
@@ -54,7 +55,7 @@
     EXPECT_EQ(url, GetLocationBarTextAsURL());
     EXPECT_EQ(url, GetNavigationEntry()->GetVirtualURL());
     EXPECT_TRUE(
-        GetNavigationEntry()->GetURL().SchemeIs(chrome::kExtensionScheme));
+        GetNavigationEntry()->GetURL().SchemeIs(extensions::kExtensionScheme));
   }
 
   // Navigates to |url| and tests that the location bar is empty while the
@@ -80,7 +81,8 @@
   LoadExtension(GetTestExtensionPath("newtab"));
   TestURLNotShown(GURL(chrome::kChromeUINewTabURL));
   // Check that the internal URL uses the chrome-extension:// scheme.
-  EXPECT_TRUE(GetNavigationEntry()->GetURL().SchemeIs(chrome::kExtensionScheme));
+  EXPECT_TRUE(GetNavigationEntry()->GetURL().SchemeIs(
+      extensions::kExtensionScheme));
 }
 
 IN_PROC_BROWSER_TEST_F(ExtensionURLRewriteBrowserTest, BookmarksURL) {