Add WebDragData to blink::WebView::dragtargetDrop

third_party/WebKit/Source/core/page/DragData.cpp

Index: third_party/WebKit/Source/core/page/DragData.cpp
diff --git a/third_party/WebKit/Source/core/page/DragData.cpp b/third_party/WebKit/Source/core/page/DragData.cpp
index 78d2b363f16412811cf274655e88197acd5812c6..64c24c54dad227924e5b1bba21d16ac6c4bb91c1 100644
--- a/third_party/WebKit/Source/core/page/DragData.cpp
+++ b/third_party/WebKit/Source/core/page/DragData.cpp
@@ -88,6 +88,11 @@ void DragData::asFilePaths(Vector<String>& result) const
     }
 }
 
+unsigned DragData::numberOfFiles() const

[hush (inactive), 2016/04/06 22:47:51]

I need explain why I expose this function here:
DragController wants to know how many files are dragged during DragEnter by
calling DragData::asFilePaths, which ignores empty filenames.
https://code.google.com/p/chromium/codesearch#chromium/src/third_party/WebKit...

With the current code, the filenames are all empty at DragEnter time. So I
expose this method for DragController's use.

At the same time, I make sure empty filenames are ignored in content/ layer. See
DropDataToMetaData in RenderViewHostImpl.

+{
+    return m_platformDragData->filenames().size();
+}
+
 bool DragData::containsPlainText() const
 {
     return m_platformDragData->types().contains(mimeTypeTextPlain);