Revert of DevTools: clean up scripts folder

third_party/WebKit/Source/devtools/scripts/jsdoc-validator/src/org/chromium/devtools/jsdoc/checks/ContextTrackingChecker.java

Index: third_party/WebKit/Source/devtools/scripts/jsdoc-validator/src/org/chromium/devtools/jsdoc/checks/ContextTrackingChecker.java
diff --git a/third_party/WebKit/Source/devtools/scripts/jsdoc-validator/src/org/chromium/devtools/jsdoc/checks/ContextTrackingChecker.java b/third_party/WebKit/Source/devtools/scripts/jsdoc-validator/src/org/chromium/devtools/jsdoc/checks/ContextTrackingChecker.java
new file mode 100644
index 0000000000000000000000000000000000000000..7024f238e0fb2288bdd39819e6c2faaf9b2c17f2
--- /dev/null
+++ b/third_party/WebKit/Source/devtools/scripts/jsdoc-validator/src/org/chromium/devtools/jsdoc/checks/ContextTrackingChecker.java
@@ -0,0 +1,34 @@
+package org.chromium.devtools.jsdoc.checks;
+
+import com.google.javascript.rhino.Node;
+
+import org.chromium.devtools.jsdoc.ValidatorContext;
+
+abstract class ContextTrackingChecker {
+    private ContextTrackingState state;
+
+    abstract void enterNode(Node node);
+
+    abstract void leaveNode(Node node);
+
+    void setState(ContextTrackingState state) {
+        this.state = state;
+    }
+
+    protected ContextTrackingState getState() {
+        return state;
+    }
+
+    protected ValidatorContext getContext() {
+        return state.getContext();
+    }
+
+    protected void reportErrorAtNodeStart(Node node, String errorText) {
+        getContext().reportErrorInNode(node, 0, errorText);
+    }
+
+    protected void reportErrorAtOffset(int offset, String errorText) {
+        getContext().reportErrorAtOffset(offset, errorText);
+    }
+
+}