DevTools: remove unused parts of the CSS instrumentation.

Source/core/css/PropertySetCSSStyleDeclaration.cpp

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Research In Motion Limited. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 26 matching lines @@
 namespace blink {
 
 namespace {
 
 class StyleAttributeMutationScope {
     WTF_MAKE_NONCOPYABLE(StyleAttributeMutationScope);
     STACK_ALLOCATED();
 public:
     StyleAttributeMutationScope(AbstractPropertySetCSSStyleDeclaration* decl)
     {
-        InspectorInstrumentation::willMutateStyle(decl);
         ++s_scopeCount;
 
         if (s_scopeCount != 1) {
             ASSERT(s_currentDecl == decl);
             return;
         }
 
         ASSERT(!s_currentDecl);
         s_currentDecl = decl;
 
@@ skipping 23 matching lines @@
             return;
 
         if (m_mutation && s_shouldDeliver)
             m_mutationRecipients->enqueueMutationRecord(m_mutation);
 
         s_shouldDeliver = false;
 
         // We have to clear internal state before calling Inspector's code.
         AbstractPropertySetCSSStyleDeclaration* localCopyStyleDecl = s_currentDecl;
         s_currentDecl = 0;
-        InspectorInstrumentation::didMutateStyle(localCopyStyleDecl, localCopyStyleDecl->parentElement());
 
         if (!s_shouldNotifyInspector)
             return;
 
         s_shouldNotifyInspector = false;
         if (localCopyStyleDecl->parentElement())
             InspectorInstrumentation::didInvalidateStyleAttr(localCopyStyleDecl->parentElement());
     }
 
     void enqueueMutationRecord()
@@ skipping 280 matching lines @@
 }
 #endif
 
 DEFINE_TRACE(InlineCSSStyleDeclaration)
 {
     visitor->trace(m_parentElement);
     AbstractPropertySetCSSStyleDeclaration::trace(visitor);
 }
 
 } // namespace blink