Add testRunner.copyAtAndCapturePixelsAsyncThen() method

content/test/mock_webclipboard_impl.cc

Index: content/test/mock_webclipboard_impl.cc
diff --git a/content/test/mock_webclipboard_impl.cc b/content/test/mock_webclipboard_impl.cc
index 8aa8c307d2c4e83dd079ac9b56c5f04b378bbec2..2109f5262849862c04d0f2172786856993a601fb 100644
--- a/content/test/mock_webclipboard_impl.cc
+++ b/content/test/mock_webclipboard_impl.cc
@@ -30,6 +30,10 @@ MockWebClipboardImpl::MockWebClipboardImpl() {}
 
 MockWebClipboardImpl::~MockWebClipboardImpl() {}
 
+uint64_t MockWebClipboardImpl::sequenceNumber(Buffer) {
+  return m_sequenceNumber;
+}
+
 bool MockWebClipboardImpl::isFormatAvailable(Format format, Buffer buffer) {
   switch (format) {
     case FormatPlainText:
@@ -130,12 +134,14 @@ void MockWebClipboardImpl::writeHTML(const blink::WebString& htmlText,
   m_htmlText = htmlText;
   m_plainText = plainText;
   m_writeSmartPaste = writeSmartPaste;
+  ++m_sequenceNumber;
 }
 
 void MockWebClipboardImpl::writePlainText(const blink::WebString& plain_text) {
   clear();
 
   m_plainText = plain_text;
+  ++m_sequenceNumber;
 }
 
 void MockWebClipboardImpl::writeURL(const blink::WebURL& url,
@@ -144,6 +150,7 @@ void MockWebClipboardImpl::writeURL(const blink::WebURL& url,
 
   m_htmlText = WebString::fromUTF8(URLToMarkup(url, title));
   m_plainText = url.spec().utf16();
+  ++m_sequenceNumber;
 }
 
 void MockWebClipboardImpl::writeImage(const blink::WebImage& image,
@@ -155,6 +162,7 @@ void MockWebClipboardImpl::writeImage(const blink::WebImage& image,
     m_plainText = m_htmlText;
     m_htmlText = WebString::fromUTF8(URLToImageMarkup(url, title));
     m_image = image;
+    ++m_sequenceNumber;
   }
 }
 
@@ -166,6 +174,7 @@ void MockWebClipboardImpl::writeDataObject(const WebDragData& data) {
     const WebDragData::Item& item = itemList[i];
     switch (item.storageType) {
       case WebDragData::Item::StorageTypeString: {
+        ++m_sequenceNumber;
         if (EqualsASCII(item.stringType, ui::Clipboard::kMimeTypeText)) {
           m_plainText = item.stringData;
           continue;
@@ -190,6 +199,7 @@ void MockWebClipboardImpl::clear() {
   m_image.reset();
   m_customData.clear();
   m_writeSmartPaste = false;
+  m_sequenceNumber = 0;

[sky, 2014/07/17 21:32:31]

Is there a reason why this and m_writeSmartPaste aren't set in the member
intializer list? It doesn't seem as though this is called from the constructor
either.

[hj.r.chung, 2014/07/18 04:00:27]

I'll upload another patch with both members in the initializer list.
And I think m_sequenceNumber shouldn't be set back to 0 in clear() since then it
will always be 1 after a write and won't be able to differentiate 2 consecutive
writes from no writes. The current code works for the test I wrote but will not
if we need more complex ones. I'll fix this.

 }
 
 }  // namespace content