Use indexed extensions on ES3.

src/gpu/gl/android/GrGLCreateNativeInterface_android.cpp

Index: src/gpu/gl/android/GrGLCreateNativeInterface_android.cpp
===================================================================
--- src/gpu/gl/android/GrGLCreateNativeInterface_android.cpp	(revision 10811)
+++ src/gpu/gl/android/GrGLCreateNativeInterface_android.cpp	(working copy)
@@ -20,7 +20,14 @@
     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;
@@ -73,6 +80,7 @@
         interface->fGetShaderInfoLog = glGetShaderInfoLog;
         interface->fGetShaderiv = glGetShaderiv;
         interface->fGetString = glGetString;
+        interface->fGetStringi = getStringi; // located above
         interface->fGetUniformLocation = glGetUniformLocation;
         interface->fLineWidth = glLineWidth;
         interface->fLinkProgram = glLinkProgram;