Rename: this object, receiver argument -> dispatch receiver, extension receiver

compiler/testData/resolvedCalls/invoke/bothReceivers.txt

@@ -12,5 +12,5 @@ Resolved call:
 Resulting descriptor: fun Int.invoke(): Unit defined in Foo
 
 Explicit receiver kind = BOTH_RECEIVERS
-This object = f {Foo}
-Receiver argument = 1 {Int}
+Dispatch receiver = f {Foo}
+Extension receiver = 1 {Int}

compiler/testData/resolvedCalls/invoke/dispatchReceiverAsReceiverForInvoke.txt

@@ -11,6 +11,6 @@ Resolved call:
 
 Resulting descriptor: fun invoke(): Unit defined in Foo
 
-Explicit receiver kind = THIS_OBJECT
-This object = f {Foo}
-Receiver argument = NO_RECEIVER
+Explicit receiver kind = DISPATCH_RECEIVER
+Dispatch receiver = f {Foo}
+Extension receiver = NO_RECEIVER

compiler/testData/resolvedCalls/invoke/extensionReceiverAsReceiverForInvoke.txt

@@ -10,6 +10,6 @@ Resolved call:
 
 Resulting descriptor: fun Foo.invoke(): Unit defined in root package
 
-Explicit receiver kind = RECEIVER_ARGUMENT
-This object = NO_RECEIVER
-Receiver argument = f {Foo}
+Explicit receiver kind = EXTENSION_RECEIVER
+Dispatch receiver = NO_RECEIVER
+Extension receiver = f {Foo}

compiler/testData/resolvedCalls/invoke/implicitReceiverForInvoke.txt

@@ -13,6 +13,6 @@ Resolved call:
 
 Resulting descriptor: fun Int.invoke(): Unit defined in Foo
 
-Explicit receiver kind = THIS_OBJECT
-This object = f {Foo}
-Receiver argument = IntExt{fun Int.<anonymous>(): Unit defined in bar}
+Explicit receiver kind = DISPATCH_RECEIVER
+Dispatch receiver = f {Foo}
+Extension receiver = IntExt{fun Int.<anonymous>(): Unit defined in bar}

compiler/testData/resolvedCalls/invoke/invokeOnClassObject1.txt

@@ -12,5 +12,5 @@ Resolved call:
 Resulting descriptor: class object defined in A
 
 Explicit receiver kind = NO_EXPLICIT_RECEIVER
-This object = NO_RECEIVER
-Receiver argument = NO_RECEIVER
+Dispatch receiver = NO_RECEIVER
+Extension receiver = NO_RECEIVER

compiler/testData/resolvedCalls/invoke/invokeOnClassObject2.txt

@@ -11,9 +11,9 @@ Resolved call:
 
 Resulting descriptor: fun invoke(i: Int): Int defined in A.<class-object-for-A>
 
-Explicit receiver kind = THIS_OBJECT
-This object = A {<class-object-for-A>}
-Receiver argument = NO_RECEIVER
+Explicit receiver kind = DISPATCH_RECEIVER
+Dispatch receiver = A {<class-object-for-A>}
+Extension receiver = NO_RECEIVER
 
 Value arguments mapping:
 

compiler/testData/resolvedCalls/invoke/invokeOnEnumEntry1.txt

@@ -13,5 +13,5 @@ Resolved call:
 Resulting descriptor: enum entry ONE : A defined in A
 
 Explicit receiver kind = NO_EXPLICIT_RECEIVER
-This object = NO_RECEIVER
-Receiver argument = NO_RECEIVER
+Dispatch receiver = NO_RECEIVER
+Extension receiver = NO_RECEIVER

compiler/testData/resolvedCalls/invoke/invokeOnEnumEntry2.txt

@@ -12,9 +12,9 @@ Resolved call:
 
 Resulting descriptor: fun invoke(i: Int): Int defined in A
 
-Explicit receiver kind = THIS_OBJECT
-This object = ONE {A}
-Receiver argument = NO_RECEIVER
+Explicit receiver kind = DISPATCH_RECEIVER
+Dispatch receiver = ONE {A}
+Extension receiver = NO_RECEIVER
 
 Value arguments mapping:
 

compiler/testData/resolvedCalls/invoke/invokeOnObject1.txt

@@ -10,5 +10,5 @@ Resolved call:
 Resulting descriptor: object A defined in root package
 
 Explicit receiver kind = NO_EXPLICIT_RECEIVER
-This object = NO_RECEIVER
-Receiver argument = NO_RECEIVER
+Dispatch receiver = NO_RECEIVER
+Extension receiver = NO_RECEIVER

compiler/testData/resolvedCalls/invoke/invokeOnObject2.txt

@@ -9,9 +9,9 @@ Resolved call:
 
 Resulting descriptor: fun invoke(i: Int): Int defined in A
 
-Explicit receiver kind = THIS_OBJECT
-This object = A {A}
-Receiver argument = NO_RECEIVER
+Explicit receiver kind = DISPATCH_RECEIVER
+Dispatch receiver = A {A}
+Extension receiver = NO_RECEIVER
 
 Value arguments mapping: