Update some switchable call stub names and comments.

runtime/vm/stub_code_arm.cc

Index: runtime/vm/stub_code_arm.cc
diff --git a/runtime/vm/stub_code_arm.cc b/runtime/vm/stub_code_arm.cc
index 59bd06f30f5af1b8b049ee151b88379cf635bdf6..4faf29e0107c2a425bdbda29bffb431a3af1838c 100644
--- a/runtime/vm/stub_code_arm.cc
+++ b/runtime/vm/stub_code_arm.cc
@@ -1989,10 +1989,10 @@ void StubCode::GenerateOptimizedIdenticalWithNumberCheckStub(
 // Called from megamorphic calls.
 //  R0: receiver
 //  R9: MegamorphicCache (preserved)
-// Result:
+// Passed to target:
 //  CODE_REG: target Code
 //  R4: arguments descriptor
-void StubCode::GenerateMegamorphicLookupStub(Assembler* assembler) {
+void StubCode::GenerateMegamorphicCallStub(Assembler* assembler) {
   __ NoMonomorphicCheckedEntry();
 
   __ LoadTaggedClassIdMayBeSmi(R0, R0);
@@ -2046,10 +2046,10 @@ void StubCode::GenerateMegamorphicLookupStub(Assembler* assembler) {
 // Called from switchable IC calls.
 //  R0: receiver
 //  R9: ICData (preserved)
-// Result:
+// Passed to target:
 //  CODE_REG: target Code object
 //  R4: arguments descriptor
-void StubCode::GenerateICLookupThroughFunctionStub(Assembler* assembler) {
+void StubCode::GenerateICCallThroughFunctionStub(Assembler* assembler) {
   __ NoMonomorphicCheckedEntry();
 
   Label loop, found, miss;
@@ -2086,7 +2086,7 @@ void StubCode::GenerateICLookupThroughFunctionStub(Assembler* assembler) {
 }
 
 
-void StubCode::GenerateICLookupThroughCodeStub(Assembler* assembler) {
+void StubCode::GenerateICCallThroughCodeStub(Assembler* assembler) {
   __ NoMonomorphicCheckedEntry();
 
   Label loop, found, miss;