IDBObserver: Lifetime Management: Adding Observer

third_party/WebKit/Source/modules/modules.gypi

 {
   'includes': [
     '../core/core_generated.gypi',
     'modules_generated.gypi',
   ],
   'variables': {
     # Experimental hooks for embedder to provide extra IDL and source files.
     #
     # Note: this is not a supported API. If you rely on this, you will be broken
     # from time to time as the code generator changes in backward incompatible
@@ skipping 1205 matching lines @@
       'indexeddb/IDBVersionChangeEvent.h',
       'indexeddb/IndexedDB.h',
       'indexeddb/IndexedDBClient.cpp',
       'indexeddb/IndexedDBClient.h',
       'indexeddb/InspectorIndexedDBAgent.cpp',
       'indexeddb/InspectorIndexedDBAgent.h',
       'indexeddb/WebIDBCallbacksImpl.cpp',
       'indexeddb/WebIDBCallbacksImpl.h',
       'indexeddb/WebIDBDatabaseCallbacksImpl.cpp',
       'indexeddb/WebIDBDatabaseCallbacksImpl.h',
+      'indexeddb/WebIDBObserverImpl.cpp',
+      'indexeddb/WebIDBObserverImpl.h',
       'installedapp/InstalledAppController.cpp',
       'installedapp/InstalledAppController.h',
       'installedapp/NavigatorInstalledApp.cpp',
       'installedapp/NavigatorInstalledApp.h',
       'installedapp/RelatedApplication.h',
       'mediacapturefromelement/AutoCanvasDrawListener.cpp',
       'mediacapturefromelement/AutoCanvasDrawListener.h',
       'mediacapturefromelement/CanvasCaptureMediaStreamTrack.cpp',
       'mediacapturefromelement/CanvasCaptureMediaStreamTrack.h',
       'mediacapturefromelement/HTMLCanvasElementCapture.cpp',
@@ skipping 821 matching lines @@
       'webaudio/ConvolverNodeTest.cpp',
       'webaudio/DynamicsCompressorNodeTest.cpp',
       'webaudio/ScriptProcessorNodeTest.cpp',
       'webaudio/StereoPannerNodeTest.cpp',
       'webdatabase/QuotaTrackerTest.cpp',
       'websockets/DOMWebSocketTest.cpp',
       'websockets/DocumentWebSocketChannelTest.cpp',
     ],
   },
 }