[DevTools] Remove Common.Event.target field.

third_party/WebKit/Source/devtools/front_end/main/Main.js

Index: third_party/WebKit/Source/devtools/front_end/main/Main.js
diff --git a/third_party/WebKit/Source/devtools/front_end/main/Main.js b/third_party/WebKit/Source/devtools/front_end/main/Main.js
index 289687a83d86a64bf4a6604cc5ce703ce6855cee..6e49e295ecfb02018334c096b9483e733ae4559c 100644
--- a/third_party/WebKit/Source/devtools/front_end/main/Main.js
+++ b/third_party/WebKit/Source/devtools/front_end/main/Main.js
@@ -808,8 +808,8 @@ Main.Main.PauseListener = class {
   _debuggerPaused(event) {
     SDK.targetManager.removeModelListener(
         SDK.DebuggerModel, SDK.DebuggerModel.Events.DebuggerPaused, this._debuggerPaused, this);
-    var debuggerPausedDetails = /** @type {!SDK.DebuggerPausedDetails} */ (event.data);
-    var debuggerModel = /** @type {!SDK.DebuggerModel} */ (event.target);
+    var debuggerModel = /** @type {!SDK.DebuggerModel} */ (event.data);
+    var debuggerPausedDetails = debuggerModel.debuggerPausedDetails();
     UI.context.setFlavor(SDK.Target, debuggerModel.target());
     Common.Revealer.reveal(debuggerPausedDetails);
   }