Support dragging texts out of webview/Chrome.

ui/android/view_android.cc

Index: ui/android/view_android.cc
diff --git a/ui/android/view_android.cc b/ui/android/view_android.cc
index 3771c37282d3359e8febec8ebcbb99db1b53a260..5c1d3e45389b18be0970b21f73e175d319f77b05 100644
--- a/ui/android/view_android.cc
+++ b/ui/android/view_android.cc
@@ -8,12 +8,12 @@
 
 #include "base/android/jni_android.h"
 #include "cc/layers/layer.h"
+#include "ui/android/window_android.h"
+
 
 namespace ui {
 
-using base::android::AttachCurrentThread;
 using base::android::JavaRef;
-using base::android::ScopedJavaLocalRef;
 
 ViewAndroid::ViewAndroid(const JavaRef<jobject>& delegate,
                          WindowAndroid* root_window)
@@ -83,4 +83,13 @@ void ViewAndroid::SetLayer(scoped_refptr<cc::Layer> layer) {
   layer_ = layer;
 }
 
+void ViewAndroid::StartDragAndDrop(const JavaRef<jstring>& jtext,
+                                   const JavaRef<jobject>& jimage) {
+  WindowAndroid* window_android = GetWindowAndroid();
+  if (!window_android)
+    return;
+
+  window_android->StartDragAndDrop(GetViewAndroidDelegate(), jtext, jimage);
+}
+
 }  // namespace ui