Support dragging texts out of webview/Chrome.

content/browser/android/content_view_core_impl.cc

Index: content/browser/android/content_view_core_impl.cc
diff --git a/content/browser/android/content_view_core_impl.cc b/content/browser/android/content_view_core_impl.cc
index 561c2fb041108fd4081f836525303c6e9c18be86..cddef8b103d6e4df59fdaaa23f543ff6a0bd91fe 100644
--- a/content/browser/android/content_view_core_impl.cc
+++ b/content/browser/android/content_view_core_impl.cc
@@ -65,6 +65,7 @@
 #include "ui/gfx/geometry/point_conversions.h"
 #include "ui/gfx/geometry/size_conversions.h"
 #include "ui/gfx/geometry/size_f.h"
+#include "ui/gfx/image/image_skia.h"
 
 using base::android::AttachCurrentThread;
 using base::android::ConvertJavaStringToUTF16;
@@ -1529,7 +1530,11 @@ void ContentViewCoreImpl::OnDragEvent(
     case JNI_DragEvent::ACTION_DRAG_EXITED:
       wcva->OnDragExited();
       break;
-    default:  // STARTED and ENDED. Nothing meaningful to do.
+    case JNI_DragEvent::ACTION_DRAG_ENDED:
+      wcva->OnDragEnded();
+      break;
+    case JNI_DragEvent::ACTION_DRAG_STARTED:
+      // Nothing meaningful to do.
       break;
   }
 }
@@ -1561,6 +1566,20 @@ void ContentViewCoreImpl::OnShowUnhandledTapUIIfNeeded(int x_dip, int y_dip) {
       static_cast<jint>(y_dip * dpi_scale()));
 }
 
+void ContentViewCoreImpl::StartDragging(const base::string16& dragged_text,
+                                        const gfx::ImageSkia& image) {
+  JNIEnv* env = AttachCurrentThread();
+  ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
+  if (obj.is_null())
+    return;
+
+  ScopedJavaLocalRef<jstring> jtext =
+      ConvertUTF16ToJavaString(env, dragged_text);
+  Java_ContentViewCore_startDragging(
+      env, obj.obj(), jtext.obj(),
+      gfx::ConvertToJavaBitmap(image.bitmap()).obj());
+}
+
 void ContentViewCoreImpl::OnSmartClipDataExtracted(
     const base::string16& text,
     const base::string16& html,