Make SkFontMgr interface const.

src/ports/SkFontHost_linux.cpp

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkFontHost.h"
 #include "SkFontHost_FreeType_common.h"
 #include "SkFontDescriptor.h"
@@ skipping 197 matching lines @@
  *  one SkFontStyleSet_Custom for each family. This class may be modified
  *  to load fonts from any source by changing the initialization.
  */
 class SkFontMgr_Custom : public SkFontMgr {
 public:
     explicit SkFontMgr_Custom(const char* dir) {
         this->load_system_fonts(dir);
     }
 
 protected:
-    virtual int onCountFamilies() SK_OVERRIDE {
+    virtual int onCountFamilies() const SK_OVERRIDE {
         return fFamilies.count();
     }
 
-    virtual void onGetFamilyName(int index, SkString* familyName) SK_OVERRIDE {
+    virtual void onGetFamilyName(int index, SkString* familyName) const SK_OVERRIDE {
         SkASSERT(index < fFamilies.count());
         familyName->set(fFamilies[index]->fFamilyName);
     }
 
-    virtual SkFontStyleSet_Custom* onCreateStyleSet(int index) SK_OVERRIDE {
+    virtual SkFontStyleSet_Custom* onCreateStyleSet(int index) const SK_OVERRIDE {
         SkASSERT(index < fFamilies.count());
         return SkRef(fFamilies[index].get());
     }
 
-    virtual SkFontStyleSet_Custom* onMatchFamily(const char familyName[]) SK_OVERRIDE {
+    virtual SkFontStyleSet_Custom* onMatchFamily(const char familyName[]) const SK_OVERRIDE {
         for (int i = 0; i < fFamilies.count(); ++i) {
             if (fFamilies[i]->fFamilyName.equals(familyName)) {
                 return SkRef(fFamilies[i].get());
             }
         }
         return NULL;
     }
 
     virtual SkTypeface* onMatchFamilyStyle(const char familyName[],
-                                           const SkFontStyle& fontStyle) SK_OVERRIDE
+                                           const SkFontStyle& fontStyle) const SK_OVERRIDE
     {
         SkAutoTUnref<SkFontStyleSet> sset(this->matchFamily(familyName));
         return sset->matchStyle(fontStyle);
     }
 
     virtual SkTypeface* onMatchFaceStyle(const SkTypeface* familyMember,
-                                         const SkFontStyle& fontStyle) SK_OVERRIDE
+                                         const SkFontStyle& fontStyle) const SK_OVERRIDE
     {
         for (int i = 0; i < fFamilies.count(); ++i) {
             for (int j = 0; j < fFamilies[i]->fStyles.count(); ++j) {
                 if (fFamilies[i]->fStyles[j] == familyMember) {
                     return fFamilies[i]->matchStyle(fontStyle);
                 }
             }
         }
         return NULL;
     }
 
-    virtual SkTypeface* onCreateFromData(SkData* data, int ttcIndex) SK_OVERRIDE {
+    virtual SkTypeface* onCreateFromData(SkData* data, int ttcIndex) const SK_OVERRIDE {
         SkAutoTUnref<SkStream> stream(new SkMemoryStream(data));
         return this->createFromStream(stream, ttcIndex);
     }
 
-    virtual SkTypeface* onCreateFromStream(SkStream* stream, int ttcIndex) SK_OVERRIDE {
+    virtual SkTypeface* onCreateFromStream(SkStream* stream, int ttcIndex) const SK_OVERRIDE {
         if (NULL == stream || stream->getLength() <= 0) {
             SkDELETE(stream);
             return NULL;
         }
 
         bool isFixedPitch;
         SkTypeface::Style style;
         SkString name;
         if (find_name_and_attributes(stream, &name, &style, &isFixedPitch)) {
             return SkNEW_ARGS(SkTypeface_Stream, (style, false, stream, isFixedPitch, name));
         } else {
             return NULL;
         }
     }
 
-    virtual SkTypeface* onCreateFromFile(const char path[], int ttcIndex) SK_OVERRIDE {
+    virtual SkTypeface* onCreateFromFile(const char path[], int ttcIndex) const SK_OVERRIDE {
         SkAutoTUnref<SkStream> stream(SkStream::NewFromFile(path));
         return stream.get() ? this->createFromStream(stream, ttcIndex) : NULL;
     }
 
     virtual SkTypeface* onLegacyCreateTypeface(const char familyName[],
-                                               unsigned styleBits) SK_OVERRIDE
+                                               unsigned styleBits) const SK_OVERRIDE
     {
         SkTypeface::Style oldStyle = (SkTypeface::Style)styleBits;
         SkFontStyle style = SkFontStyle(oldStyle & SkTypeface::kBold
                                                  ? SkFontStyle::kBold_Weight
                                                  : SkFontStyle::kNormal_Weight,
                                         SkFontStyle::kNormal_Width,
                                         oldStyle & SkTypeface::kItalic
                                                  ? SkFontStyle::kItalic_Slant
                                                  : SkFontStyle::kUpright_Slant);
         SkTypeface* tf = NULL;
@@ skipping 104 matching lines @@
     }
 
     SkTArray<SkAutoTUnref<SkFontStyleSet_Custom>, true> fFamilies;
     SkFontStyleSet_Custom* gDefaultFamily;
     SkTypeface* gDefaultNormal;
 };
 
 SkFontMgr* SkFontMgr::Factory() {
     return new SkFontMgr_Custom(SK_FONT_FILE_PREFIX);
 }