Revert of Revert of Split out CSSParser public API

Source/core/css/parser/CSSParser.h

Index: Source/core/css/parser/CSSParser.h
diff --git a/Source/core/css/parser/CSSParser.h b/Source/core/css/parser/CSSParser.h
new file mode 100644
index 0000000000000000000000000000000000000000..13c52f47e2201115955ac2425ca322162e602b36
--- /dev/null
+++ b/Source/core/css/parser/CSSParser.h
@@ -0,0 +1,52 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CSSParser_h
+#define CSSParser_h
+
+#include "core/css/parser/BisonCSSParser.h"
+
+namespace blink {
+
+// This class serves as the public API for the css/parser subsystem
+
+// FIXME: This should probably be a static-only class or a singleton class
+class CSSParser {
+    STACK_ALLOCATED();
+public:
+    explicit CSSParser(const CSSParserContext&);
+
+    bool parseDeclaration(MutableStylePropertySet*, const String&, CSSParserObserver*, StyleSheetContents* contextStyleSheet);
+    void parseSelector(const String&, CSSSelectorList&);
+
+    static PassRefPtrWillBeRawPtr<StyleRuleBase> parseRule(const CSSParserContext&, StyleSheetContents*, const String&);
+    static void parseSheet(const CSSParserContext&, StyleSheetContents*, const String&, const TextPosition& startPosition, CSSParserObserver*, bool logErrors = false);
+    // FIXME: Unify these two into a single function
+    static bool parseValue(MutableStylePropertySet*, CSSPropertyID, const String&, bool important, CSSParserMode, StyleSheetContents*);
+    static bool parseValue(MutableStylePropertySet*, CSSPropertyID, const String&, bool important, const Document&);
+
+    static PassRefPtrWillBeRawPtr<ImmutableStylePropertySet> parseInlineStyleDeclaration(const String&, Element*);
+
+    static PassOwnPtr<Vector<double> > parseKeyframeKeyList(const String&);
+    static PassRefPtrWillBeRawPtr<StyleKeyframe> parseKeyframeRule(const CSSParserContext&, StyleSheetContents*, const String&);
+
+    static bool parseSupportsCondition(const String&);
+
+    static PassRefPtr<CSSValueList> parseFontFaceValue(const AtomicString&);
+    static PassRefPtr<CSSValue> parseAnimationTimingFunctionValue(const String&);
+
+    static bool parseColor(RGBA32& color, const String&, bool strict = false);
+    static bool parseSystemColor(RGBA32& color, const String&);
+    static StyleColor colorFromRGBColorString(const String&);
+
+private:
+    BisonCSSParser m_bisonParser;
+};
+
+CSSPropertyID cssPropertyID(const String&);
+
+} // namespace blink
+
+#endif // CSSParser_h
+