Remove page/EventHandler.* and fix core.gypi

Source/core/core.gypi

 {
     'includes': [
         'core_generated.gypi',
     ],
     'variables': {
         # Files for which bindings (.cpp and .h files) will be generated
         'core_idl_files': [
             'animation/KeyframeEffect.idl',
             'animation/EffectModel.idl',
             'animation/AnimationEffectReadOnly.idl',
@@ skipping 1772 matching lines @@
             'page/ContextMenuController.cpp',
             'page/ContextMenuProvider.h',
             'page/CreateWindow.cpp',
             'page/CreateWindow.h',
             'page/CustomContextMenuProvider.cpp',
             'page/CustomContextMenuProvider.h',
             'page/DOMWindowPagePopup.cpp',
             'page/DOMWindowPagePopup.h',
             'page/DragController.cpp',
             'page/DragData.cpp',
-            'page/EventHandler.cpp',
             'page/EventSource.cpp',
             'page/EventSource.h',
             'page/EventWithHitTestResults.h',
             'page/FocusController.cpp',
             'page/FrameTree.cpp',
             'page/NetworkStateNotifier.cpp',
             'page/NetworkStateNotifier.h',
             'page/Page.cpp',
             'page/Page.h',
             'page/PageAnimator.cpp',
@@ skipping 733 matching lines @@
             'events/TransitionEvent.cpp',
             'events/TransitionEvent.h',
             'events/TreeScopeEventContext.cpp',
             'events/TreeScopeEventContext.h',
             'events/UIEvent.cpp',
             'events/UIEventWithKeyState.cpp',
             'events/WheelEvent.cpp',
             'events/WheelEvent.h',
             'events/WindowEventContext.cpp',
             'events/WindowEventContext.h',
+            'input/EventHandler.cpp',
+            'input/EventHandler.h',
             'input/InputDevice.cpp',
             'input/InputDevice.h',
         ],
         'webcore_html_files': [
             'html/ClassList.cpp',
             'html/ClassList.h',
             'html/CrossOriginAttribute.cpp',
             'html/CrossOriginAttribute.h',
             'html/DOMFormData.cpp',
             'html/DOMFormData.h',
@@ skipping 1375 matching lines @@
             'style/ComputedStyleTest.cpp',
             'style/OutlineValueTest.cpp',
             'style/SVGComputedStyleTest.cpp',
             'testing/PrivateScriptTestTest.cpp',
             'timing/MemoryInfoTest.cpp',
             'workers/WorkerThreadTest.cpp',
             'xml/parser/SharedBufferReaderTest.cpp',
         ],
     }
 }