Eliminate class TextCheckingHelper

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/AnimationEffectReadOnly.idl',
             'animation/AnimationEffectTiming.idl',
@@ skipping 1644 matching lines @@
             'editing/serializers/StyledMarkupAccumulator.cpp',
             'editing/serializers/StyledMarkupAccumulator.h',
             'editing/serializers/StyledMarkupSerializer.cpp',
             'editing/serializers/StyledMarkupSerializer.h',
             'editing/serializers/TextOffset.cpp',
             'editing/serializers/TextOffset.h',
             'editing/spellcheck/SpellCheckRequester.cpp',
             'editing/spellcheck/SpellCheckRequester.h',
             'editing/spellcheck/SpellChecker.cpp',
             'editing/spellcheck/SpellChecker.h',
-            'editing/spellcheck/TextCheckingHelper.cpp',
-            'editing/spellcheck/TextCheckingHelper.h',
+            'editing/spellcheck/TextCheckingParagraph.cpp',
+            'editing/spellcheck/TextCheckingParagraph.h',
             'editing/state_machines/BackspaceStateMachine.cpp',
             'editing/state_machines/BackspaceStateMachine.h',
             'editing/state_machines/BackwardGraphemeBoundaryStateMachine.cpp',
             'editing/state_machines/BackwardGraphemeBoundaryStateMachine.h',
             'editing/state_machines/ForwardGraphemeBoundaryStateMachine.cpp',
             'editing/state_machines/ForwardGraphemeBoundaryStateMachine.h',
             'editing/state_machines/TextSegmentationMachineState.cpp',
             'editing/state_machines/TextSegmentationMachineState.h',
             'editing/state_machines/StateMachineUtil.cpp',
             'editing/state_machines/StateMachineUtil.h',
@@ skipping 2598 matching lines @@
             'testing/PrivateScriptTestTest.cpp',
             'timing/MemoryInfoTest.cpp',
             'timing/PerformanceBaseTest.cpp',
             'timing/PerformanceObserverTest.cpp',
             'workers/WorkerThreadTest.cpp',
             'workers/WorkerThreadTestHelper.h',
             'xml/parser/SharedBufferReaderTest.cpp',
         ],
     }
 }