Revert "add DeviceInfo"

This reverts commit b2442896e3a226c7ebe9d47fa80b257e98a6a34d.

Change-Id: I50f6555451f71067505245333c8e558b5e3b2b3b
diff --git a/libs/hwui/utils/StringUtils.cpp b/libs/hwui/utils/StringUtils.cpp
index ccddd3c..a1df0e7 100644
--- a/libs/hwui/utils/StringUtils.cpp
+++ b/libs/hwui/utils/StringUtils.cpp
@@ -14,24 +14,26 @@
  * limitations under the License.
  */
 
-#include <utils/StringUtils.h>
+#include "StringUtils.h"
 
 namespace android {
 namespace uirenderer {
 
-unordered_string_set&& StringUtils::split(const char* spacedList) {
-    unordered_string_set set;
+StringCollection::StringCollection(const char* spacedList) {
     const char* current = spacedList;
     const char* head = current;
     do {
         head = strchr(current, ' ');
         std::string s(current, head ? head - current : strlen(current));
         if (s.length()) {
-            set.insert(std::move(s));
+            mSet.insert(s);
         }
         current = head + 1;
     } while (head);
-    return std::move(set);
+}
+
+bool StringCollection::has(const char* s) {
+    return mSet.find(std::string(s)) != mSet.end();
 }
 
 }; // namespace uirenderer
diff --git a/libs/hwui/utils/StringUtils.h b/libs/hwui/utils/StringUtils.h
index 28b3d63..ef2a6d5 100644
--- a/libs/hwui/utils/StringUtils.h
+++ b/libs/hwui/utils/StringUtils.h
@@ -22,16 +22,12 @@
 namespace android {
 namespace uirenderer {
 
-class unordered_string_set : public std::unordered_set<std::string> {
+class StringCollection {
 public:
-    bool has(const char* str) {
-        return find(std::string(str)) != end();
-    }
-};
-
-class StringUtils {
-public:
-    static unordered_string_set&& split(const char* spacedList);
+    StringCollection(const char* spacedList);
+    bool has(const char* string);
+private:
+    std::unordered_set<std::string> mSet;
 };
 
 } /* namespace uirenderer */