publish canvas context API stat metrics

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

Index: third_party/WebKit/Source/platform/graphics/CanvasMetrics.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/CanvasMetrics.cpp b/third_party/WebKit/Source/platform/graphics/CanvasMetrics.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..7dfc0a79d21972fa3e8337d4655880ed15425f5d
--- /dev/null
+++ b/third_party/WebKit/Source/platform/graphics/CanvasMetrics.cpp
@@ -0,0 +1,38 @@
+/*
+ * 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.
+ */
+
+#include "config.h"
+#include "platform/graphics/CanvasMetrics.h"
+
+#include "public/platform/Platform.h"
+
+namespace blink {
+
+void CanvasMetrics::countCanvasContextStat(const CanvasContextStat stat)
+{
+    Platform::current()->histogramEnumeration("WebCore.CanvasContextStat", stat, CanvasContextStat::NumberOfStats);
+}
+
+} // namespace blink