DevTools: Fix Maximum call stack size exceeded error while retrieving CPU profile.

content/shell/browser/shell_devtools_frontend.cc

Index: content/shell/browser/shell_devtools_frontend.cc
diff --git a/content/shell/browser/shell_devtools_frontend.cc b/content/shell/browser/shell_devtools_frontend.cc
index 0dea6a16b5567df25149282e255cd437ed3a6145..c07f436b6cd6b567f7d7d94b7576ff401aa20d41 100644
--- a/content/shell/browser/shell_devtools_frontend.cc
+++ b/content/shell/browser/shell_devtools_frontend.cc
@@ -270,18 +270,21 @@ void ShellDevToolsFrontend::DispatchProtocolMessage(
     DevToolsAgentHost* agent_host, const std::string& message) {
 
   if (message.length() < kMaxMessageChunkSize) {
-    base::string16 javascript = base::UTF8ToUTF16(
-        "DevToolsAPI.dispatchMessage(" + message + ");");
+    std::string param;
+    base::JSONWriter::Write(base::StringValue(message), &param);

[pfeldman, 2016/05/28 02:26:03]

EscapeJSONString

[alph, 2016/05/28 02:37:03]

Done.

+    std::string code = "DevToolsAPI.dispatchMessage(" + param + ");";
+    base::string16 javascript = base::UTF8ToUTF16(code);
     web_contents()->GetMainFrame()->ExecuteJavaScriptForTests(javascript);
     return;
   }
 
-  base::FundamentalValue total_size(static_cast<int>(message.length()));
+  size_t total_size = message.length();
   for (size_t pos = 0; pos < message.length(); pos += kMaxMessageChunkSize) {
     std::string param;
     base::JSONWriter::Write(
         base::StringValue(message.substr(pos, kMaxMessageChunkSize)), &param);
-    std::string code = "DevToolsAPI.dispatchMessageChunk(" + param + ");";
+    std::string code = "DevToolsAPI.dispatchMessageChunk(" + param + "," +
+                       std::to_string(pos ? 0 : total_size) + ");";
     base::string16 javascript = base::UTF8ToUTF16(code);
     web_contents()->GetMainFrame()->ExecuteJavaScriptForTests(javascript);
   }