DevTools: Introduce Debugger::Reason::PromiseRejection pause reason.

Source/core/inspector/InspectorDebuggerAgent.cpp

Index: Source/core/inspector/InspectorDebuggerAgent.cpp
diff --git a/Source/core/inspector/InspectorDebuggerAgent.cpp b/Source/core/inspector/InspectorDebuggerAgent.cpp
index 3fa6ff4a542357901b767c69e84172d934c25220..48f3cd49ababa13266d803017ac3031a2d7c6a25 100644
--- a/Source/core/inspector/InspectorDebuggerAgent.cpp
+++ b/Source/core/inspector/InspectorDebuggerAgent.cpp
@@ -1387,7 +1387,7 @@ void InspectorDebuggerAgent::didParseSource(const String& scriptId, const Script
     }
 }
 
-ScriptDebugListener::SkipPauseRequest InspectorDebuggerAgent::didPause(ScriptState* scriptState, const ScriptValue& callFrames, const ScriptValue& exception, const Vector<String>& hitBreakpoints)
+ScriptDebugListener::SkipPauseRequest InspectorDebuggerAgent::didPause(ScriptState* scriptState, const ScriptValue& callFrames, const ScriptValue& exception, const Vector<String>& hitBreakpoints, bool isPromiseRejection)
 {
     ScriptDebugListener::SkipPauseRequest result;
     if (callFrames.isEmpty())
@@ -1415,7 +1415,7 @@ ScriptDebugListener::SkipPauseRequest InspectorDebuggerAgent::didPause(ScriptSta
     if (!exception.isEmpty()) {
         InjectedScript injectedScript = m_injectedScriptManager->injectedScriptFor(scriptState);
         if (!injectedScript.isEmpty()) {
-            m_breakReason = InspectorFrontend::Debugger::Reason::Exception;
+            m_breakReason = isPromiseRejection ? InspectorFrontend::Debugger::Reason::PromiseRejection : InspectorFrontend::Debugger::Reason::Exception;
             m_breakAuxData = injectedScript.wrapObject(exception, InspectorDebuggerAgent::backtraceObjectGroup)->openAccessors();
             // m_breakAuxData might be null after this.
         }