Add BlimpClientContext and factory with real and dummy implementation

blimp/client/core/android/java/src/org/chromium/blimp/core/BlimpClientContextImpl.java

Index: blimp/client/core/android/java/src/org/chromium/blimp/core/BlimpClientContextImpl.java
diff --git a/blimp/client/core/android/java/src/org/chromium/blimp/core/BlimpClientContextImpl.java b/blimp/client/core/android/java/src/org/chromium/blimp/core/BlimpClientContextImpl.java
new file mode 100644
index 0000000000000000000000000000000000000000..78c5f1f0e18d32c2f2b61420f957711401cdeee5
--- /dev/null
+++ b/blimp/client/core/android/java/src/org/chromium/blimp/core/BlimpClientContextImpl.java
@@ -0,0 +1,51 @@
+// Copyright 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.
+
+package org.chromium.blimp.core;
+
+import org.chromium.base.annotations.CalledByNative;
+import org.chromium.base.annotations.JNINamespace;
+import org.chromium.blimp_public.BlimpClientContext;
+import org.chromium.blimp_public.BlimpContents;
+
+/**
+ * BlimpClientContextImpl is a Java wrapper to allow communicating with the native
+ * BlimpClientContextImpl object.
+ */
+@JNINamespace("blimp::client")
+public class BlimpClientContextImpl implements BlimpClientContext {
+    @CalledByNative
+    private static BlimpClientContextImpl create(long nativeBlimpClientContextImplAndroid) {
+        return new BlimpClientContextImpl(nativeBlimpClientContextImplAndroid);
+    }
+
+    /**
+     * The pointer to the BlimpClientContextImplAndroid JNI bridge.
+     */
+    private long mNativeBlimpClientContextImplAndroid;
+
+    private BlimpClientContextImpl(long nativeBlimpClientContextImplAndroid) {
+        mNativeBlimpClientContextImplAndroid = nativeBlimpClientContextImplAndroid;
+    }
+
+    @Override
+    public BlimpContents createBlimpContents() {
+        assert mNativeBlimpClientContextImplAndroid != 0;
+        return nativeCreateBlimpContents(mNativeBlimpClientContextImplAndroid);
+    }
+
+    @CalledByNative
+    private void clearNativePtr() {
+        mNativeBlimpClientContextImplAndroid = 0;
+    }
+
+    @CalledByNative
+    private long getNativePtr() {
+        assert mNativeBlimpClientContextImplAndroid != 0;
+        return mNativeBlimpClientContextImplAndroid;
+    }
+
+    private native BlimpContents nativeCreateBlimpContents(
+            long nativeBlimpClientContextImplAndroid);
+}