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

chrome/browser/ui/webui/screenshot_source.h

 // Copyright (c) 2011 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 CHROME_BROWSER_UI_WEBUI_SCREENSHOT_SOURCE_H_
 #define CHROME_BROWSER_UI_WEBUI_SCREENSHOT_SOURCE_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 11 matching lines @@
 typedef std::vector<unsigned char> ScreenshotData;
 typedef linked_ptr<ScreenshotData> ScreenshotDataPtr;
 
 class FilePath;
 class Profile;
 
 // ScreenshotSource is the data source that serves screenshots (saved
 // or current) to the bug report html ui.
 class ScreenshotSource : public ChromeURLDataManager::DataSource {
  public:
-  explicit ScreenshotSource(
+  ScreenshotSource(
       std::vector<unsigned char>* current_screenshot,
       Profile* profile);
 
 #if defined(USE_ASH)
 
   // Queries the browser process to determine if screenshots are disabled.
   static bool AreScreenshotsDisabled();
 
   // Common access for the screenshot directory, parameter is set to the
   // requested directory and return value of true is given upon success.
@@ skipping 67 matching lines @@
   Profile* profile_;
 
   // Key: Relative path to the screenshot (including filename)
   // Value: Pointer to the screenshot data associated with the path.
   std::map<std::string, ScreenshotDataPtr> cached_screenshots_;
 
   DISALLOW_COPY_AND_ASSIGN(ScreenshotSource);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_SCREENSHOT_SOURCE_H_