Implement 'URLSearchParams'

third_party/WebKit/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 78 matching lines @@
             'dom/Range.idl',
             'dom/SharedArrayBuffer.idl',
             'dom/StringCallback.idl',
             'dom/Text.idl',
             'dom/TouchList.idl',
             'dom/TreeWalker.idl',
             'dom/Uint16Array.idl',
             'dom/Uint32Array.idl',
             'dom/Uint8Array.idl',
             'dom/Uint8ClampedArray.idl',
+            'dom/URLSearchParams.idl',
             'dom/XMLDocument.idl',
             'dom/shadow/ShadowRoot.idl',
             'editing/Selection.idl',
             'events/AnimationEvent.idl',
             'events/AnimationPlayerEvent.idl',
             'events/ApplicationCacheErrorEvent.idl',
             'events/AutocompleteErrorEvent.idl',
             'events/BeforeUnloadEvent.idl',
             'events/ClipboardEvent.idl',
             'events/CompositionEvent.idl',
@@ skipping 2385 matching lines @@
             'dom/TransformSourceLibxslt.cpp',
             'dom/TreeScope.cpp',
             'dom/TreeScope.h',
             'dom/TreeScopeAdopter.cpp',
             'dom/TreeScopeAdopter.h',
             'dom/TreeScopeStyleSheetCollection.cpp',
             'dom/TreeScopeStyleSheetCollection.h',
             'dom/TreeShared.h',
             'dom/TreeWalker.cpp',
             'dom/TreeWalker.h',
+            'dom/URLSearchParams.cpp',
+            'dom/URLSearchParams.h',
             'dom/UserActionElementSet.cpp',
             'dom/UserActionElementSet.h',
             'dom/ViewportDescription.cpp',
             'dom/ViewportDescription.h',
             'dom/VisitedLinkState.cpp',
             'dom/VisitedLinkState.h',
             'dom/WeakIdentifierMap.h',
             'dom/XMLDocument.cpp',
             'dom/XMLDocument.h',
             'dom/custom/CustomElement.cpp',
@@ skipping 1404 matching lines @@
             'style/SVGComputedStyleTest.cpp',
             'svg/SVGPathParserTest.cpp',
             'svg/UnsafeSVGAttributeSanitizationTest.cpp',
             'testing/PrivateScriptTestTest.cpp',
             'timing/MemoryInfoTest.cpp',
             'workers/WorkerThreadTest.cpp',
             'xml/parser/SharedBufferReaderTest.cpp',
         ],
     }
 }