Put CSSFontStyleRangeValue into the blink::cssvalue namespace.

This is part of the gradual process of putting all types that derive
from CSSValue into blink::cssvalue:: namespace.

Bug: 667961
Signed-off-by: Zhuoyu Qian <zhuoyu.qian@samsung.com>
Change-Id: Ia34819a0518e339ed2d310361452355207346801
Reviewed-on: https://chromium-review.googlesource.com/956165Reviewed-by: Rune Lillesveen <futhark@chromium.org>
Cr-Commit-Position: refs/heads/master@{#543339}

third_party/WebKit/Source/core/css/CSSFontStyleRangeValue.cpp

@@ -28,6 +28,7 @@
 #include "platform/wtf/text/StringBuilder.h"
 
 namespace blink {
+namespace cssvalue {
 
 String CSSFontStyleRangeValue::CustomCSSText() const {
   if (!oblique_values_)
@@ -53,4 +54,5 @@ void CSSFontStyleRangeValue::TraceAfterDispatch(blink::Visitor* visitor) {
   CSSValue::TraceAfterDispatch(visitor);
 }
 
+}  // namespace cssvalue
 }  // namespace blink

third_party/WebKit/Source/core/css/CSSFontStyleRangeValue.h

@@ -30,6 +30,7 @@
 #include "core/css/CSSValueList.h"
 
 namespace blink {
+namespace cssvalue {
 
 class CSSFontStyleRangeValue final : public CSSValue {
  public:
@@ -72,6 +73,7 @@ class CSSFontStyleRangeValue final : public CSSValue {
 
 DEFINE_CSS_VALUE_TYPE_CASTS(CSSFontStyleRangeValue, IsFontStyleRangeValue());
 
+}  // namespace cssvalue
 }  // namespace blink
 
 #endif

third_party/WebKit/Source/core/css/FontFace.cpp

@@ -593,8 +593,8 @@ FontSelectionCapabilities FontFace::GetFontSelectionCapabilities() const {
           break;
       }
     } else if (style_->IsFontStyleRangeValue()) {
-      const CSSFontStyleRangeValue* range_value =
-          ToCSSFontStyleRangeValue(style_);
+      const cssvalue::CSSFontStyleRangeValue* range_value =
+          cssvalue::ToCSSFontStyleRangeValue(style_);
       if (range_value->GetFontStyleValue()->IsIdentifierValue()) {
         CSSValueID font_style_id =
             range_value->GetFontStyleValue()->GetValueID();

third_party/WebKit/Source/core/css/FontFaceCacheTest.cpp

@@ -17,6 +17,8 @@
 
 namespace blink {
 
+using namespace cssvalue;
+
 class FontFaceCacheTest : public PageTestBase {
   USING_FAST_MALLOC(FontFaceCacheTest);