Add missing (and remove superfluous) 'explicit' from constructors.

webkit/blob/mock_blob_url_request_context.h

 // Copyright (c) 2012 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 WEBKIT_BLOB_MOCK_BLOB_URL_REQUEST_CONTEXT_H_
 #define WEBKIT_BLOB_MOCK_BLOB_URL_REQUEST_CONTEXT_H_
 
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_job.h"
 #include "net/url_request/url_request_job_factory_impl.h"
 
 namespace fileapi {
 class FileSystemContext;
 }
 
 namespace webkit_blob {
 
 class BlobStorageController;
 
 class MockBlobURLRequestContext : public net::URLRequestContext {
  public:
-  MockBlobURLRequestContext(fileapi::FileSystemContext* file_system_context);
+  explicit MockBlobURLRequestContext(
+      fileapi::FileSystemContext* file_system_context);
   virtual ~MockBlobURLRequestContext();
 
   BlobStorageController* blob_storage_controller() const {
     return blob_storage_controller_.get();
   }
 
  private:
   net::URLRequestJobFactoryImpl job_factory_;
   scoped_ptr<BlobStorageController> blob_storage_controller_;
 
@@ skipping 10 matching lines @@
  private:
   const GURL blob_url_;
   BlobStorageController* blob_storage_controller_;
 
   DISALLOW_COPY_AND_ASSIGN(ScopedTextBlob);
 };
 
 }  // namespace webkit_blob
 
 #endif  // WEBKIT_BLOB_MOCK_BLOB_URL_REQUEST_CONTEXT_H_