Use indexed extensions on ES3.

src/gpu/gl/android/GrGLCreateNativeInterface_android.cpp

 // Modified from chromium/src/webkit/glue/gl_bindings_skia_cmd_buffer.cc
 
 // Copyright (c) 2011 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.
 
 #include "gl/GrGLExtensions.h"
 #include "gl/GrGLInterface.h"
 
 #ifndef GL_GLEXT_PROTOTYPES
 #define GL_GLEXT_PROTOTYPES
 #endif
 
 #include <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
 
 #include <EGL/egl.h>
 
 const GrGLInterface* GrGLCreateNativeInterface() {
     static SkAutoTUnref<GrGLInterface> glInterface;
     if (!glInterface.get()) {
         GrGLExtensions extensions;
-        if (!extensions.init(kES_GrGLBinding, glGetString, NULL, glGetIntegerv)) {
+        GrGLGetStringiProc getStringi;
+#if GL_ES_VERSION_3_0
+        getStringi = glGetStringi;
+#else
+        getStringi = (GrGLGetStringiProc) eglGetProcAddress("glGetStringi");
+#endif
+
+        if (!extensions.init(kES_GrGLBinding, glGetString, getStringi, glGetIntegerv)) {
             return NULL;
         }
         GrGLInterface* interface = new GrGLInterface;
         glInterface.reset(interface);
         interface->fBindingsExported = kES_GrGLBinding;
         interface->fActiveTexture = glActiveTexture;
         interface->fAttachShader = glAttachShader;
         interface->fBindAttribLocation = glBindAttribLocation;
         interface->fBindBuffer = glBindBuffer;
         interface->fBindTexture = glBindTexture;
@@ skipping 32 matching lines @@
         interface->fGenTextures = glGenTextures;
         interface->fGenVertexArrays = glGenVertexArraysOES;
         interface->fGetBufferParameteriv = glGetBufferParameteriv;
         interface->fGetError = glGetError;
         interface->fGetIntegerv = glGetIntegerv;
         interface->fGetProgramInfoLog = glGetProgramInfoLog;
         interface->fGetProgramiv = glGetProgramiv;
         interface->fGetShaderInfoLog = glGetShaderInfoLog;
         interface->fGetShaderiv = glGetShaderiv;
         interface->fGetString = glGetString;
+        interface->fGetStringi = getStringi; // located above
         interface->fGetUniformLocation = glGetUniformLocation;
         interface->fLineWidth = glLineWidth;
         interface->fLinkProgram = glLinkProgram;
         interface->fPixelStorei = glPixelStorei;
         interface->fReadPixels = glReadPixels;
         interface->fScissor = glScissor;
 #if GR_GL_USE_NEW_SHADER_SOURCE_SIGNATURE
         interface->fShaderSource = (GrGLShaderSourceProc) glShaderSource;
 #else
         interface->fShaderSource = glShaderSource;
@@ skipping 74 matching lines @@
         interface->fMapBuffer = glMapBufferOES;
         interface->fUnmapBuffer = glUnmapBufferOES;
 #else
         interface->fMapBuffer = (GrGLMapBufferProc) eglGetProcAddress("glMapBufferOES");
         interface->fUnmapBuffer = (GrGLUnmapBufferProc) eglGetProcAddress("glUnmapBufferOES");
 #endif
     }
     glInterface.get()->ref();
     return glInterface.get();
 }