Move GrGLExtensions from GrGLContextInfo to GrGLInterface

src/gpu/gl/GrGLExtensions.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gl/GrGLExtensions.h"
 #include "gl/GrGLDefines.h"
 #include "gl/GrGLUtil.h"
 
 #include "SkTSearch.h"
 #include "SkTSort.h"
 
 namespace {
 inline bool extension_compare(const SkString& a, const SkString& b) {
     return strcmp(a.c_str(), b.c_str()) < 0;
 }
 }
 
 bool GrGLExtensions::init(GrGLStandard standard,
                           GrGLGetStringProc getString,
                           GrGLGetStringiProc getStringi,
                           GrGLGetIntegervProc getIntegerv) {
-    fStrings.reset();
+    fInitialized = false;
+    fStrings->reset();
+
     if (NULL == getString) {
         return false;
     }
 
     // glGetStringi and indexed extensions were added in version 3.0 of desktop GL and ES.
     const GrGLubyte* verString = getString(GR_GL_VERSION);
     if (NULL == verString) {
         return false;
     }
     GrGLVersion version = GrGLGetVersionFromString((const char*) verString);
     bool indexed = version >= GR_GL_VER(3, 0);
 
     if (indexed) {
         if (NULL == getStringi || NULL == getIntegerv) {
             return false;
         }
         GrGLint extensionCnt = 0;
         getIntegerv(GR_GL_NUM_EXTENSIONS, &extensionCnt);
-        fStrings.push_back_n(extensionCnt);
+        fStrings->push_back_n(extensionCnt);
         for (int i = 0; i < extensionCnt; ++i) {
             const char* ext = (const char*) getStringi(GR_GL_EXTENSIONS, i);
-            fStrings[i] = ext;
+            (*fStrings)[i] = ext;
         }
     } else {
         const char* extensions = (const char*) getString(GR_GL_EXTENSIONS);
         if (NULL == extensions) {
             return false;
         }
         while (true) {
             // skip over multiple spaces between extensions
             while (' ' == *extensions) {
                 ++extensions;
             }
             // quit once we reach the end of the string.
             if ('\0' == *extensions) {
                 break;
             }
             // we found an extension
             size_t length = strcspn(extensions, " ");
-            fStrings.push_back().set(extensions, length);
+            fStrings->push_back().set(extensions, length);
             extensions += length;
         }
     }
-    if (!fStrings.empty()) {
+    if (!fStrings->empty()) {
         SkTLessFunctionToFunctorAdaptor<SkString, extension_compare> cmp;
-        SkTQSort(&fStrings.front(), &fStrings.back(), cmp);
+        SkTQSort(&fStrings->front(), &fStrings->back(), cmp);
     }
+    fInitialized = true;
     return true;
 }
 
 bool GrGLExtensions::has(const char* ext) const {
-    if (fStrings.empty()) {
+    if (fStrings->empty()) {
         return false;
     }
     SkString extensionStr(ext);
-    int idx = SkTSearch<SkString, extension_compare>(&fStrings.front(),
-                                                     fStrings.count(),
+    int idx = SkTSearch<SkString, extension_compare>(&fStrings->front(),
+                                                     fStrings->count(),
                                                      extensionStr,
                                                      sizeof(SkString));
     return idx >= 0;
 }
 
 void GrGLExtensions::print(const char* sep) const {
     if (NULL == sep) {
         sep = " ";
     }
-    int cnt = fStrings.count();
+    int cnt = fStrings->count();
     for (int i = 0; i < cnt; ++i) {
-        GrPrintf("%s%s", fStrings[i].c_str(), (i < cnt - 1) ? sep : "");
+        GrPrintf("%s%s", (*fStrings)[i].c_str(), (i < cnt - 1) ? sep : "");
     }
 }