Change the signature of JSONReader::Read() and related methods to be more

chrome/test/automation/tab_proxy.cc

Index: chrome/test/automation/tab_proxy.cc
diff --git a/chrome/test/automation/tab_proxy.cc b/chrome/test/automation/tab_proxy.cc
index f17a35de2ce20db36a95c5e33415e29b360d5f25..07a34880a8be5b8233585f5452fd8d6260431506 100644
--- a/chrome/test/automation/tab_proxy.cc
+++ b/chrome/test/automation/tab_proxy.cc
@@ -555,10 +555,10 @@ bool TabProxy::ExecuteAndExtractValue(const std::wstring& frame_xpath,
   json.append("]");
 
   JSONStringValueSerializer deserializer(json);
-  succeeded = deserializer.Deserialize(value, NULL);
+  *value = deserializer.Deserialize(NULL);
 
   delete response;
-  return succeeded;
+  return *value != NULL;
 }
 
 bool TabProxy::GetConstrainedWindowCount(int* count) const {