DevTools: Implement evaluation on async call frames.

Source/core/inspector/JavaScriptCallFrame.h

Index: Source/core/inspector/JavaScriptCallFrame.h
diff --git a/Source/core/inspector/JavaScriptCallFrame.h b/Source/core/inspector/JavaScriptCallFrame.h
index ac0c0350b614765836a3ed44520132f39c979e42..8ad7a335f93f42e2b3845be83dd2fc490015b6c9 100644
--- a/Source/core/inspector/JavaScriptCallFrame.h
+++ b/Source/core/inspector/JavaScriptCallFrame.h
@@ -31,7 +31,6 @@
 #ifndef JavaScriptCallFrame_h
 #define JavaScriptCallFrame_h
 
-
 #include "bindings/v8/ScopedPersistent.h"
 #include "bindings/v8/ScriptWrappable.h"
 #include <v8-debug.h>
@@ -64,7 +63,8 @@ public:
     bool isAtReturn() const;
     v8::Handle<v8::Value> returnValue() const;
 
-    v8::Handle<v8::Value> evaluate(const String& expression);
+    ScriptValue evaluate(const String& expression, const ScriptValue& contextExtension);
+    ScriptValue evaluateGlobal(const String& expression, const ScriptValue& contextExtension);
     v8::Handle<v8::Value> restart();
     ScriptValue setVariableValue(int scopeNumber, const String& variableName, const ScriptValue& newValue);
     v8::Handle<v8::Object> innerCallFrame();
@@ -72,6 +72,8 @@ public:
 private:
     JavaScriptCallFrame(v8::Handle<v8::Context> debuggerContext, v8::Handle<v8::Object> callFrame);
 
+    ScriptValue runEvaluate(const char* methodName, const String& expression, const ScriptValue& contextExtension);
+
     v8::Isolate* m_isolate;
     RefPtr<JavaScriptCallFrame> m_caller;
     ScopedPersistent<v8::Context> m_debuggerContext;