Add glTexStorage3DMultisampleANGLE entry point

This adds the entry point but does not implement it yet.

The entry point and enums are also added to the gl2ext_angle.h
header file.

BUG=angleproject:2775
TEST=angle_end2end_tests

Change-Id: I24c231c52e7cbb13637880b21044e655935b51e8
Reviewed-on: https://chromium-review.googlesource.com/1188575
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
diff --git a/src/libGLESv2/libGLESv2_autogen.cpp b/src/libGLESv2/libGLESv2_autogen.cpp
index 14bc5f1..d75e8b7 100644
--- a/src/libGLESv2/libGLESv2_autogen.cpp
+++ b/src/libGLESv2/libGLESv2_autogen.cpp
@@ -3136,6 +3136,19 @@
     return gl::GetQueryObjectui64vRobustANGLE(id, pname, bufSize, length, params);
 }
 
+// GL_ANGLE_texture_multisample_array
+void GL_APIENTRY glTexStorage3DMultisampleANGLE(GLenum target,
+                                                GLsizei samples,
+                                                GLint sizedinternalformat,
+                                                GLsizei width,
+                                                GLsizei height,
+                                                GLsizei depth,
+                                                GLboolean fixedsamplelocations)
+{
+    return gl::TexStorage3DMultisampleANGLE(target, samples, sizedinternalformat, width, height,
+                                            depth, fixedsamplelocations);
+}
+
 // GL_ANGLE_translated_shader_source
 void GL_APIENTRY glGetTranslatedShaderSourceANGLE(GLuint shader,
                                                   GLsizei bufsize,
@@ -8727,4 +8740,17 @@
         ctx, target, attachment, texture, level, numViews, viewportOffsets);
 }
 
+void GL_APIENTRY glTexStorage3DMultisampleANGLEContextANGLE(GLeglContext ctx,
+                                                            GLenum target,
+                                                            GLsizei samples,
+                                                            GLint sizedinternalformat,
+                                                            GLsizei width,
+                                                            GLsizei height,
+                                                            GLsizei depth,
+                                                            GLboolean fixedsamplelocations)
+{
+    return gl::TexStorage3DMultisampleANGLEContextANGLE(ctx, target, samples, sizedinternalformat,
+                                                        width, height, depth, fixedsamplelocations);
+}
+
 }  // extern "C"