Use std::unordered_map in KeyCharacterMap

Previously, KeyedVector was used in KeyCharacterMap. Convert this to the
std::unordered_map.

Bug: 278299254
Test: m checkinput
Test: m libinput_tests && $ANDROID_HOST_OUT/nativetest64/libinput_tests/libinput_tests
Change-Id: I643aa8cc8ae0c68ade4d11d02e34be64faf7f157
diff --git a/include/input/KeyCharacterMap.h b/include/input/KeyCharacterMap.h
index 9423041..b2e8baa 100644
--- a/include/input/KeyCharacterMap.h
+++ b/include/input/KeyCharacterMap.h
@@ -26,9 +26,9 @@
 #include <android-base/result.h>
 #include <input/Input.h>
 #include <utils/Errors.h>
-#include <utils/KeyedVector.h>
 #include <utils/Tokenizer.h>
 #include <utils/Unicode.h>
+#include <map>
 
 // Maximum number of keys supported by KeyCharacterMaps
 #define MAX_KEYS 8192
@@ -152,13 +152,9 @@
     void writeToParcel(Parcel* parcel) const;
 #endif
 
-    bool operator==(const KeyCharacterMap& other) const;
+    bool operator==(const KeyCharacterMap& other) const = default;
 
-    bool operator!=(const KeyCharacterMap& other) const;
-
-    KeyCharacterMap(const KeyCharacterMap& other);
-
-    virtual ~KeyCharacterMap();
+    KeyCharacterMap(const KeyCharacterMap& other) = default;
 
 private:
     struct Behavior {
@@ -173,17 +169,18 @@
 
         /* The replacement keycode if the key has to be replaced outright. */
         int32_t replacementKeyCode = 0;
+
+        bool operator==(const Behavior&) const = default;
     };
 
     struct Key {
-        Key();
-        Key(const Key& other);
+        bool operator==(const Key&) const = default;
 
         /* The single character label printed on the key, or 0 if none. */
-        char16_t label;
+        char16_t label = 0;
 
         /* The number or symbol character generated by the key, or 0 if none. */
-        char16_t number;
+        char16_t number = 0;
 
         /* The list of key behaviors sorted from most specific to least specific
          * meta key binding. */
@@ -218,7 +215,6 @@
 
     public:
         Parser(KeyCharacterMap* map, Tokenizer* tokenizer, Format format);
-        ~Parser();
         status_t parse();
 
     private:
@@ -232,8 +228,8 @@
         status_t parseCharacterLiteral(char16_t* outCharacter);
     };
 
-    KeyedVector<int32_t, Key*> mKeys;
-    KeyboardType mType;
+    std::map<int32_t, Key> mKeys;
+    KeyboardType mType = KeyboardType::UNKNOWN;
     std::string mLoadFileName;
     bool mLayoutOverlayApplied = false;