Prepare for -Wall for third-party code, -Wextra for chromium_code

content/browser/android/java/gin_java_method_invocation_helper.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 CONTENT_BROWSER_ANDROID_JAVA_GIN_JAVA_METHOD_INVOCATION_HELPER_H_
 #define CONTENT_BROWSER_ANDROID_JAVA_GIN_JAVA_METHOD_INVOCATION_HELPER_H_
 
 #include <stddef.h>
 
 #include <map>
@@ skipping 48 matching lines @@
                                 const std::string& method_name,
                                 const base::ListValue& arguments);
   void Init(DispatcherDelegate* dispatcher);
 
   void Invoke();
 
   bool HoldsPrimitiveResult();
   const base::ListValue& GetPrimitiveResult();
   const base::android::JavaRef<jobject>& GetObjectResult();
   const base::android::JavaRef<jclass>& GetSafeAnnotationClass();
-  const GinJavaBridgeError GetInvocationError();
+  GinJavaBridgeError GetInvocationError();
 
  private:
   friend class base::RefCountedThreadSafe<GinJavaMethodInvocationHelper>;
   ~GinJavaMethodInvocationHelper();
 
   void BuildObjectRefsFromListValue(DispatcherDelegate* dispatcher,
                                     const base::Value* list_value);
   void BuildObjectRefsFromDictionaryValue(DispatcherDelegate* dispatcher,
                                           const base::Value* dict_value);
 
@@ skipping 23 matching lines @@
   GinJavaBridgeError invocation_error_;
   base::android::ScopedJavaGlobalRef<jobject> object_result_;
   base::android::ScopedJavaGlobalRef<jclass> safe_annotation_clazz_;
 
   DISALLOW_COPY_AND_ASSIGN(GinJavaMethodInvocationHelper);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ANDROID_JAVA_GIN_JAVA_METHOD_INVOCATION_HELPER_H_