libprocessgroup: Rename CgroupController -> CgroupControllerWrapper

So that the name is not overloaded with libcgrouprc_format's
CgroupController, which can be confusing.

Bug: 349105928
Test: m
Change-Id: I39df9814c500de68fd20139e661363ba51ea3543
diff --git a/libprocessgroup/cgroup_map.h b/libprocessgroup/cgroup_map.h
index 31925d5..ec3bd78 100644
--- a/libprocessgroup/cgroup_map.h
+++ b/libprocessgroup/cgroup_map.h
@@ -23,10 +23,10 @@
 #include <android/cgrouprc.h>
 
 // Convenient wrapper of an ACgroupController pointer.
-class CgroupController {
+class CgroupControllerWrapper {
   public:
     // Does not own controller
-    explicit CgroupController(const ACgroupController* controller)
+    explicit CgroupControllerWrapper(const ACgroupController* controller)
         : controller_(controller) {}
 
     uint32_t version() const;
@@ -57,8 +57,8 @@
     static bool SetupCgroups();
 
     static CgroupMap& GetInstance();
-    CgroupController FindController(const std::string& name) const;
-    CgroupController FindControllerByPath(const std::string& path) const;
+    CgroupControllerWrapper FindController(const std::string& name) const;
+    CgroupControllerWrapper FindControllerByPath(const std::string& path) const;
     int ActivateControllers(const std::string& path) const;
 
   private: