Update khronos GLES2/gl2.h header

gpu/command_buffer/client/gles2_c_lib_autogen.h

Index: gpu/command_buffer/client/gles2_c_lib_autogen.h
diff --git a/gpu/command_buffer/client/gles2_c_lib_autogen.h b/gpu/command_buffer/client/gles2_c_lib_autogen.h
index 80a4d230ad4b82abbaa82f2c328286b9d89da329..d56df6fdb0d851125148a1aac0bedbc487320682 100644
--- a/gpu/command_buffer/client/gles2_c_lib_autogen.h
+++ b/gpu/command_buffer/client/gles2_c_lib_autogen.h
@@ -355,7 +355,8 @@ void GLES2ShaderBinary(
       n, shaders, binaryformat, binary, length);
 }
 void GLES2ShaderSource(
-    GLuint shader, GLsizei count, const char** str, const GLint* length) {
+    GLuint shader, GLsizei count, const GLchar* const* str,
+    const GLint* length) {
   gles2::GetGLContext()->ShaderSource(shader, count, str, length);
 }
 void GLES2StencilFunc(GLenum func, GLint ref, GLuint mask) {