Implement robust the GetIntegeri_v entry point.

BUG=angleproject:1354

Change-Id: I408d0e78064aa4e493d6ca66565384ac585040e1
Reviewed-on: https://chromium-review.googlesource.com/401400
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Geoff Lang <geofflang@chromium.org>
diff --git a/src/libANGLE/validationES3.cpp b/src/libANGLE/validationES3.cpp
index 1581b75..2f93651 100644
--- a/src/libANGLE/validationES3.cpp
+++ b/src/libANGLE/validationES3.cpp
@@ -1930,6 +1930,37 @@
     return ValidateIndexedStateQuery(context, target, index, nullptr);
 }
 
+bool ValidateGetIntegeri_vRobustANGLE(ValidationContext *context,
+                                      GLenum target,
+                                      GLuint index,
+                                      GLsizei bufSize,
+                                      GLsizei *length,
+                                      GLint *data)
+{
+    if (!context->getGLVersion().isES3OrGreater())
+    {
+        context->handleError(Error(GL_INVALID_OPERATION, "Context does not support GLES3.0"));
+        return false;
+    }
+
+    if (!ValidateRobustEntryPoint(context, bufSize))
+    {
+        return false;
+    }
+
+    if (!ValidateIndexedStateQuery(context, target, index, length))
+    {
+        return false;
+    }
+
+    if (!ValidateRobustBufferSize(context, bufSize, *length))
+    {
+        return false;
+    }
+
+    return true;
+}
+
 bool ValidateGetInteger64i_v(ValidationContext *context, GLenum target, GLuint index, GLint64 *data)
 {
     if (!context->getGLVersion().isES3OrGreater())