Create task_manager namespace and wrap classes related to TaskManager with it.

chrome/browser/task_manager/background_resource_provider.h

Index: chrome/browser/task_manager/background_resource_provider.h
diff --git a/chrome/browser/task_manager/task_manager_background_resource_provider.h b/chrome/browser/task_manager/background_resource_provider.h
similarity index 73%
rename from chrome/browser/task_manager/task_manager_background_resource_provider.h
rename to chrome/browser/task_manager/background_resource_provider.h
index f764c69f07f75757b1a21280b930723fc7e4881f..ecc3c403cb99aac6a6ba7148eab4b6b72fa40272 100644
--- a/chrome/browser/task_manager/task_manager_background_resource_provider.h
+++ b/chrome/browser/task_manager/background_resource_provider.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_BACKGROUND_RESOURCE_PROVIDER_H_
-#define CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_BACKGROUND_RESOURCE_PROVIDER_H_
+#ifndef CHROME_BROWSER_TASK_MANAGER_BACKGROUND_RESOURCE_PROVIDER_H_
+#define CHROME_BROWSER_TASK_MANAGER_BACKGROUND_RESOURCE_PROVIDER_H_
 
 #include <map>
 
@@ -14,13 +14,16 @@
 #include "content/public/browser/notification_registrar.h"
 
 class BackgroundContents;
-class TaskManagerBackgroundContentsResource;
 
-class TaskManagerBackgroundContentsResourceProvider
+namespace task_manager {
+
+class BackgroundContentsResource;
+
+class BackgroundContentsResourceProvider
     : public TaskManager::ResourceProvider,
       public content::NotificationObserver {
  public:
-  explicit TaskManagerBackgroundContentsResourceProvider(
+  explicit BackgroundContentsResourceProvider(
       TaskManager* task_manager);
 
   virtual TaskManager::Resource* GetResource(int origin_pid,
@@ -35,7 +38,7 @@ class TaskManagerBackgroundContentsResourceProvider
                        const content::NotificationDetails& details) OVERRIDE;
 
  private:
-  virtual ~TaskManagerBackgroundContentsResourceProvider();
+  virtual ~BackgroundContentsResourceProvider();
 
   void Add(BackgroundContents* background_contents, const string16& title);
   void Remove(BackgroundContents* background_contents);
@@ -51,14 +54,16 @@ class TaskManagerBackgroundContentsResourceProvider
 
   // Maps the actual resources (the BackgroundContents) to the Task Manager
   // resources.
-  typedef std::map<BackgroundContents*, TaskManagerBackgroundContentsResource*>
+  typedef std::map<BackgroundContents*, BackgroundContentsResource*>
       Resources;
   Resources resources_;
 
   // A scoped container for notification registries.
   content::NotificationRegistrar registrar_;
 
-  DISALLOW_COPY_AND_ASSIGN(TaskManagerBackgroundContentsResourceProvider);
+  DISALLOW_COPY_AND_ASSIGN(BackgroundContentsResourceProvider);
 };
 
-#endif  // CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_BACKGROUND_RESOURCE_PROVIDER_H_
+}  // namespace task_manager
+
+#endif  // CHROME_BROWSER_TASK_MANAGER_BACKGROUND_RESOURCE_PROVIDER_H_