android/apps: Add CanvasProof App;

platform_tools/android/apps/canvasproof/src/main/jni/JavaInputStream.h

+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+#ifndef JavaInputStream_DEFINED
+#define JavaInputStream_DEFINED
+
+#include <jni.h>
+#include "SkStream.h"
+
+class JavaInputStream : public SkStream {
+public:
+    JavaInputStream(JNIEnv*, jbyteArray javaBuffer, jobject javaIoInputStream);
+    bool isAtEnd() const override;
+    size_t read(void*, size_t) override;
+private:
+    JNIEnv* fEnv;
+    jobject fInputStream;
+    jbyteArray fJavaBuffer;
+    jclass fInputStreamClass;
+    jmethodID fReadMethodID;
+    jint fStartIndex;
+    jint fEndIndex;
+};
+
+#endif  // JavaInputStream_DEFINED