publish canvas context API stat metrics

third_party/WebKit/Source/platform/graphics/CanvasMetrics.h

+/*
+ * Copyright (C) 2015 Google, Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY GOOGLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

[Justin Novosad, 2015/11/19 20:36:09]

This is the wrong header. In new files we just use this:
http://www.chromium.org/developers/coding-style#TOC-File-headers

[zmin, 2015/11/19 22:23:36]

Done.

+ */
+
+#ifndef CanvasMetrics_h
+#define CanvasMetrics_h
+
+#include "platform/PlatformExport.h"
+
+namespace blink {
+
+class PLATFORM_EXPORT CanvasMetrics {
+public:
+    enum CanvasContextStat {
+        ContextCreated = 0,
+        ContextCreatedWithGPUAccelerated = 1,
+        ContextCreatedWithDisplayList = 2,
+        ContextCreatedWithSoftware = 3,
+        GPUContextLost = 4,
+        SoftwareContextCreationFailed = 5,
+        GPUContextCreationFailed = 6,
+        DisplayListFallbackToRaster = 7,
+        NumberOfStats
+    };
+
+    static void countCanvasContextStat(const CanvasContextStat);
+};
+
+} // namespace blink
+
+#endif // CanvasMetrics_h