[components] Switch {RefCounted}ProfileKeyedService to use BrowserContext

chrome/browser/extensions/test_extension_system.h

Index: chrome/browser/extensions/test_extension_system.h
diff --git a/chrome/browser/extensions/test_extension_system.h b/chrome/browser/extensions/test_extension_system.h
index 48960c02acb22752cb523e1f39495d4df599d3a3..09762db1e6afc1daead79e402360126cf5e05e8e 100644
--- a/chrome/browser/extensions/test_extension_system.h
+++ b/chrome/browser/extensions/test_extension_system.h
@@ -14,6 +14,10 @@ class FilePath;
 class Time;
 }
 
+namespace content {
+class BrowserContext;
+}
+
 namespace extensions {
 
 // Test ExtensionSystem, for use with TestingProfile.
@@ -70,7 +74,7 @@ class TestExtensionSystem : public ExtensionSystem {
   virtual Blacklist* blacklist() OVERRIDE;
 
   // Factory method for tests to use with SetTestingProfile.
-  static ProfileKeyedService* Build(Profile* profile);
+  static ProfileKeyedService* Build(content::BrowserContext* profile);
 
  protected:
   Profile* profile_;