Revert of [DevTools] Use InspectorFrontendHost.readyForTest for layout tests.

content/shell/browser/layout_test/layout_test_devtools_frontend.cc

Index: content/shell/browser/layout_test/layout_test_devtools_frontend.cc
diff --git a/content/shell/browser/layout_test/layout_test_devtools_frontend.cc b/content/shell/browser/layout_test/layout_test_devtools_frontend.cc
index f30846ac661a286cb919ac2fbcbfc60da354a2a1..7da2af53ad64fb820513e6b131d081edd4c0546d 100644
--- a/content/shell/browser/layout_test/layout_test_devtools_frontend.cc
+++ b/content/shell/browser/layout_test/layout_test_devtools_frontend.cc
@@ -5,13 +5,9 @@
 #include "content/shell/browser/layout_test/layout_test_devtools_frontend.h"
 
 #include "base/command_line.h"
-#include "base/json/json_reader.h"
-#include "base/json/json_writer.h"
 #include "base/path_service.h"
 #include "base/strings/stringprintf.h"
-#include "base/strings/utf_string_conversions.h"
 #include "build/build_config.h"
-#include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/shell/browser/layout_test/blink_test_controller.h"
 #include "content/shell/browser/shell.h"
@@ -71,34 +67,13 @@
                                                const std::string frontend_url) {
   DisconnectFromTarget();
   preferences()->Clear();
-  ready_for_test_ = false;
-  pending_evaluations_.clear();
   frontend_shell()->LoadURL(GetDevToolsPathAsURL(settings, frontend_url));
-}
-
-void LayoutTestDevToolsFrontend::EvaluateInFrontend(
-    int call_id,
-    const std::string& script) {
-  if (!ready_for_test_) {
-    pending_evaluations_.push_back(std::make_pair(call_id, script));
-    return;
-  }
-
-  std::string encoded_script;
-  base::JSONWriter::Write(base::StringValue(script), &encoded_script);
-  std::string source =
-      base::StringPrintf("DevToolsAPI.evaluateForTestInFrontend(%d, %s);",
-                         call_id,
-                         encoded_script.c_str());
-  web_contents()->GetMainFrame()->ExecuteJavaScriptForTests(
-      base::UTF8ToUTF16(source));
 }
 
 LayoutTestDevToolsFrontend::LayoutTestDevToolsFrontend(
     Shell* frontend_shell,
     WebContents* inspected_contents)
-    : ShellDevToolsFrontend(frontend_shell, inspected_contents),
-      ready_for_test_(false) {
+    : ShellDevToolsFrontend(frontend_shell, inspected_contents) {
 }
 
 LayoutTestDevToolsFrontend::~LayoutTestDevToolsFrontend() {
@@ -109,25 +84,6 @@
   // Do not close the front-end shell.
 }
 
-void LayoutTestDevToolsFrontend::HandleMessageFromDevToolsFrontend(
-    const std::string& message) {
-  std::string method;
-  base::DictionaryValue* dict = nullptr;
-  scoped_ptr<base::Value> parsed_message = base::JSONReader::Read(message);
-  if (parsed_message &&
-      parsed_message->GetAsDictionary(&dict) &&
-      dict->GetString("method", &method) &&
-      method == "readyForTest") {
-    ready_for_test_ = true;
-    for (const auto& pair : pending_evaluations_)
-      EvaluateInFrontend(pair.first, pair.second);
-    pending_evaluations_.clear();
-    return;
-  }
-
-  ShellDevToolsFrontend::HandleMessageFromDevToolsFrontend(message);
-}
-
 void LayoutTestDevToolsFrontend::RenderProcessGone(
     base::TerminationStatus status) {
   BlinkTestController::Get()->DevToolsProcessCrashed();