[general] moving ios and android project under ./platform folder

include/mbgl/gfx/rendering_stats.hpp

@@ -0,0 +1,37 @@
+#pragma once
+
+namespace mbgl {
+namespace gfx {
+
+struct RenderingStats {
+    RenderingStats() = default;
+    bool isZero() const;
+
+    int numDrawCalls;
+    int numActiveTextures;
+    int numCreatedTextures;
+    int numBuffers;
+    int numFrameBuffers;
+
+    int memTextures;
+    int memIndexBuffers;
+    int memVertexBuffers;
+
+    RenderingStats& operator+=(const RenderingStats& right);
+};
+
+inline RenderingStats& RenderingStats::operator+=(const RenderingStats& r) {
+    numDrawCalls += r.numDrawCalls;
+    numActiveTextures += r.numActiveTextures;
+    numCreatedTextures += r.numCreatedTextures;
+    numBuffers += r.numBuffers;
+    numFrameBuffers += r.numFrameBuffers;
+
+    memTextures += r.memTextures;
+    memIndexBuffers += r.memIndexBuffers;
+    memVertexBuffers += r.memVertexBuffers;
+    return *this;
+}
+
+} // namespace gfx
+} // namespace mbgl