DevTools: allow storing devtools preferences on the browser side.

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 64d8035b428d2512ce0eef08b86ac759d716d073..7b87fcb6c571737c262e7d3b22a1edc58faabed7 100644
--- a/content/shell/browser/layout_test/layout_test_devtools_frontend.cc
+++ b/content/shell/browser/layout_test/layout_test_devtools_frontend.cc
@@ -17,7 +17,7 @@ namespace content {
 // static
 LayoutTestDevToolsFrontend* LayoutTestDevToolsFrontend::Show(
     WebContents* inspected_contents,
-    const std::string& settings,
+    const std::string& test_path,
     const std::string& frontend_url) {
   Shell* shell = Shell::CreateNewWindow(inspected_contents->GetBrowserContext(),
                                         GURL(),
@@ -25,15 +25,15 @@ LayoutTestDevToolsFrontend* LayoutTestDevToolsFrontend::Show(
                                         gfx::Size());
   LayoutTestDevToolsFrontend* devtools_frontend =
       new LayoutTestDevToolsFrontend(shell, inspected_contents);
-
-  shell->LoadURL(GetDevToolsPathAsURL(settings, frontend_url));
+  devtools_frontend->preferences()->
+      SetStringWithoutPathExpansion("testPath", "\"" + test_path + "\"");
+  shell->LoadURL(GetDevToolsPathAsURL(frontend_url));
 
   return devtools_frontend;
 }
 
 // static.
 GURL LayoutTestDevToolsFrontend::GetDevToolsPathAsURL(
-    const std::string& settings,
     const std::string& frontend_url) {
   if (!frontend_url.empty())
     return GURL(frontend_url);
@@ -51,18 +51,16 @@ GURL LayoutTestDevToolsFrontend::GetDevToolsPathAsURL(
   base::FilePath dev_tools_path =
       dir_exe.AppendASCII("resources/inspector/devtools.html");
 
-  GURL result = net::FilePathToFileURL(dev_tools_path);
-  if (!settings.empty())
-    result = GURL(base::StringPrintf("%s?settings=%s&experiments=true",
-                                     result.spec().c_str(),
-                                     settings.c_str()));
-  return result;
+  return net::FilePathToFileURL(dev_tools_path);
 }
 
-void LayoutTestDevToolsFrontend::ReuseFrontend(const std::string& settings,
+void LayoutTestDevToolsFrontend::ReuseFrontend(const std::string& test_path,
                                                const std::string frontend_url) {
   DisconnectFromTarget();
-  frontend_shell()->LoadURL(GetDevToolsPathAsURL(settings, frontend_url));
+  preferences()->Clear();
+  preferences()->SetStringWithoutPathExpansion("testPath",
+                                               "\"" + test_path + "\"");
+  frontend_shell()->LoadURL(GetDevToolsPathAsURL(frontend_url));
 }
 
 LayoutTestDevToolsFrontend::LayoutTestDevToolsFrontend(