Add GL error usage metrics for glTexImage* APIs

gpu/command_buffer/service/gl_utils.cc

+// Copyright (c) 2016 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 "gpu/command_buffer/service/gl_utils.h"
+
+#include "base/metrics/histogram.h"
+
+namespace gpu {
+namespace gles2 {
+
+std::vector<int> GetAllGLErrors() {
+  int gl_errors[] = {
+    GL_NO_ERROR,
+    GL_INVALID_ENUM,
+    GL_INVALID_VALUE,
+    GL_INVALID_OPERATION,
+    GL_INVALID_FRAMEBUFFER_OPERATION,
+    GL_OUT_OF_MEMORY,
+  };
+  return base::CustomHistogram::ArrayToCustomRanges(gl_errors,
+                                                    arraysize(gl_errors));
+}
+
+}  // namespace gles2
+}  // namespace gpu