Rework ExtensionApiUnittest to run in extensions_unittests, removing its Chrome dependencies.

extensions/browser/api_test_utils.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef EXTENSIONS_BROWSER_API_TEST_UTILS_H_
 #define EXTENSIONS_BROWSER_API_TEST_UTILS_H_
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 37 matching lines @@
 base::Value* RunFunctionAndReturnSingleResult(
     UIThreadExtensionFunction* function,
     const std::string& args,
     content::BrowserContext* context);
 base::Value* RunFunctionAndReturnSingleResult(
     UIThreadExtensionFunction* function,
     const std::string& args,
     content::BrowserContext* context,
     RunFunctionFlags flags);
 
+// Run |function| with |args| and return the resulting error. Adds an error to
+// the current test if |function| returns a result. Takes ownership of
+// |function|.
+std::string RunFunctionAndReturnError(UIThreadExtensionFunction* function,
+                                      const std::string& args,
+                                      content::BrowserContext* context,
+                                      RunFunctionFlags flags);
+std::string RunFunctionAndReturnError(UIThreadExtensionFunction* function,
+                                      const std::string& args,
+                                      content::BrowserContext* context);
+
 // Create and run |function| with |args|. Works with both synchronous and async
 // functions. Ownership of |function| remains with the caller.
 //
 // TODO(aa): It would be nice if |args| could be validated against the schema
 // that |function| expects. That way, we know that we are testing something
 // close to what the bindings would actually send.
 //
 // TODO(aa): I'm concerned that this style won't scale to all the bits and bobs
 // we're going to need to frob for all the different extension functions. But
 // we can refactor when we see what is needed.
 bool RunFunction(UIThreadExtensionFunction* function,
                  const std::string& args,
                  content::BrowserContext* context,
                  scoped_ptr<ExtensionFunctionDispatcher> dispatcher,
                  RunFunctionFlags flags);
 
 }  // namespace function_test_utils
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_API_TEST_UTILS_H_