Add Share module

Summary:
revision of https://github.com/facebook/react-native/pull/5476

It has only one method `shareTextContent` and next will be`shareBinaryContent`.

In Android, Promise can't receive a result, because `startActivityForResult` is not working with `Intent.ACTION_SEND`. Maybe we can use `createChooser(Intent target, CharSequence title, IntentSender sender)` which requires API level 22.
Closes https://github.com/facebook/react-native/pull/5904

Differential Revision: D3612889

fbshipit-source-id: 0e7aaf34b076a99089cc76bd649e6da067d9a760

ReactAndroid/src/androidTest/java/com/facebook/react/tests/BUCK

@@ -14,6 +14,7 @@ deps = [
   react_native_target('java/com/facebook/react/common:common'),
   react_native_target('java/com/facebook/react/modules/core:core'),
   react_native_target('java/com/facebook/react/modules/datepicker:datepicker'),
+  react_native_target('java/com/facebook/react/modules/share:share'),
   react_native_target('java/com/facebook/react/modules/systeminfo:systeminfo'),
   react_native_target('java/com/facebook/react/modules/timepicker:timepicker'),
   react_native_target('java/com/facebook/react/touch:touch'),

ReactAndroid/src/androidTest/java/com/facebook/react/tests/ShareTestCase.java

@@ -0,0 +1,109 @@
+/**
+ * Copyright (c) 2014-present, Facebook, Inc.
+ * All rights reserved.
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+package com.facebook.react.tests;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.app.Instrumentation.ActivityMonitor;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.content.IntentFilter.MalformedMimeTypeException;
+import android.support.v4.app.DialogFragment;
+
+import com.facebook.react.bridge.BaseJavaModule;
+import com.facebook.react.testing.ReactInstanceSpecForTest;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.JavaScriptModule;
+import com.facebook.react.bridge.WritableMap;
+import com.facebook.react.bridge.WritableNativeMap;
+import com.facebook.react.modules.share.ShareModule;
+import com.facebook.react.testing.ReactAppInstrumentationTestCase;
+
+/**
+ * Test case for {@link ShareModule}.
+ */
+public class ShareTestCase extends ReactAppInstrumentationTestCase {
+
+  private static interface ShareTestModule extends JavaScriptModule {
+    public void showShareDialog(WritableMap content, WritableMap options);
+  }
+
+  private static class ShareRecordingModule extends BaseJavaModule {
+
+    private int mOpened = 0;
+    private int mErrors = 0;
+
+    @Override
+    public String getName() {
+      return "ShareRecordingModule";
+    }
+
+    @ReactMethod
+    public void recordOpened() {
+      mOpened++;
+    }
+
+    @ReactMethod
+    public void recordError() {
+      mErrors++;
+    }
+
+    public int getOpened() {
+      return mOpened;
+    }
+
+    public int getErrors() {
+      return mErrors;
+    }
+
+  }
+
+  final ShareRecordingModule mRecordingModule = new ShareRecordingModule();
+
+  @Override
+  protected ReactInstanceSpecForTest createReactInstanceSpecForTest() {
+    return super.createReactInstanceSpecForTest()
+        .addNativeModule(mRecordingModule)
+        .addJSModule(ShareTestModule.class);
+  }
+
+  @Override
+  protected String getReactApplicationKeyUnderTest() {
+    return "ShareTestApp";
+  }
+
+  private ShareTestModule getTestModule() {
+    return getReactContext().getCatalystInstance().getJSModule(ShareTestModule.class);
+  }
+
+  public void testShowBasicShareDialog() {
+    final WritableMap content = new WritableNativeMap();
+    content.putString("message", "Hello, ReactNative!");
+    final WritableMap options = new WritableNativeMap();
+
+    IntentFilter intentFilter = new IntentFilter(Intent.ACTION_CHOOSER);
+    intentFilter.addCategory(Intent.CATEGORY_DEFAULT);
+    ActivityMonitor monitor = getInstrumentation().addMonitor(intentFilter, null, true);
+
+    getTestModule().showShareDialog(content, options);
+
+    waitForBridgeAndUIIdle();
+    getInstrumentation().waitForIdleSync();
+
+    assertEquals(1, monitor.getHits());
+    assertEquals(1, mRecordingModule.getOpened());
+    assertEquals(0, mRecordingModule.getErrors());
+
+  }
+
+}