One SkTSearch to rule them all. Allow key to be of different type than the array.

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 int extension_compare(const SkString* a, const SkString* b) {
-    return strcmp(a->c_str(), b->c_str());
+inline bool extension_compare(const SkString& a, const SkString& b) {
+    return strcmp(a.c_str(), b.c_str()) < 0;
 }
 }
 
 bool GrGLExtensions::init(GrGLBinding binding,
                           GrGLGetStringProc getString,
                           GrGLGetStringiProc getStringi,
                           GrGLGetIntegervProc getIntegerv) {
     fStrings.reset();
     if (NULL == getString) {
         return false;
@@ skipping 32 matching lines @@
             if ('\0' == *extensions) {
                 break;
             }
             // we found an extension
             size_t length = strcspn(extensions, " ");
             fStrings.push_back().set(extensions, length);
             extensions += length;
         }
     }
     if (0 != fStrings.count()) {
-        SkTSearchCompareLTFunctor<SkString, extension_compare> cmp;
+        SkTLessFunctionToFunctorAdaptor<SkString, extension_compare> cmp;
         SkTQSort(&fStrings.front(), &fStrings.back(), cmp);
     }
     return true;
 }
 
 bool GrGLExtensions::has(const char* ext) const {
     SkString extensionStr(ext);
     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();
     for (int i = 0; i < cnt; ++i) {
         GrPrintf("%s%s", fStrings[i].c_str(), (i < cnt - 1) ? sep : "");
     }
 }