Updated icons to svg version.

compiler/psi/src/org/jetbrains/kotlin/idea/KotlinFileIcon.java

@@ -0,0 +1,14 @@
+/*
+ * Copyright 2010-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.idea;
+
+import com.intellij.openapi.util.IconLoader;
+
+import javax.swing.*;
+
+public interface KotlinFileIcon {
+    Icon KOTLIN_FILE = IconLoader.getIcon("/org/jetbrains/kotlin/idea/icons/kotlin_file.svg");
+}

compiler/psi/src/org/jetbrains/kotlin/idea/KotlinFileIcon.java.182

@@ -0,0 +1,14 @@
+/*
+ * Copyright 2010-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.idea;
+
+import com.intellij.openapi.util.IconLoader;
+
+import javax.swing.*;
+
+public interface KotlinFileIcon {
+    Icon KOTLIN_FILE = IconLoader.getIcon("/org/jetbrains/kotlin/idea/icons/kotlin_file.png");
+}

compiler/psi/src/org/jetbrains/kotlin/idea/KotlinFileType.java

@@ -31,7 +31,7 @@ public class KotlinFileType extends LanguageFileType {
         @NotNull
         @Override
         protected Icon compute() {
-            return IconLoader.getIcon("/org/jetbrains/kotlin/idea/icons/kotlin_file.png");
+            return KotlinFileIcon.KOTLIN_FILE;
         }
     };
 

compiler/psi/src/org/jetbrains/kotlin/idea/KotlinModuleFileType.java

@@ -34,7 +34,7 @@ public class KotlinModuleFileType implements FileType {
         @NotNull
         @Override
         protected Icon compute() {
-            return IconLoader.getIcon("/org/jetbrains/kotlin/idea/icons/kotlin_file.png");
+            return KotlinFileIcon.KOTLIN_FILE;
         }
     };