[content shell] Add support for layout tests using content_shell on Android (first step).

content/shell/shell_browser_main.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/shell/shell_browser_main.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/threading/thread_restrictions.h"
 #include "content/public/browser/browser_main_runner.h"
 #include "content/shell/layout_test_controller_host.h"
 #include "content/shell/shell.h"
 #include "content/shell/shell_browser_context.h"
 #include "content/shell/shell_content_browser_client.h"
 #include "content/shell/shell_switches.h"
 #include "webkit/support/webkit_support.h"
 
 namespace {
 
 GURL GetURLForLayoutTest(const char* test_name,
                          std::string* expected_pixel_hash) {
-#if defined(OS_ANDROID)
-  // DumpRenderTree is not currently supported for Android using the content
-  // shell.
-  NOTIMPLEMENTED();
-  return GURL::EmptyGURL();
-#else
   std::string path_or_url = test_name;
   std::string pixel_hash;
   std::string::size_type separator_position = path_or_url.find('\'');
   if (separator_position != std::string::npos) {
     pixel_hash = path_or_url.substr(separator_position + 1);
     path_or_url.erase(separator_position);
   }
   if (expected_pixel_hash)
     *expected_pixel_hash = pixel_hash;
   GURL test_url = webkit_support::CreateURLForPathOrURL(path_or_url);
   {
     // We're outside of the message loop here, and this is a test.
     base::ThreadRestrictions::ScopedAllowIO allow_io;
     webkit_support::SetCurrentDirectoryForFileURL(test_url);
   }
   return test_url;
-#endif
 }
 
 }  // namespace
 
 // Main routine for running as the Browser process.
 int ShellBrowserMain(const content::MainFunctionParams& parameters) {
   scoped_ptr<content::BrowserMainRunner> main_runner_(
       content::BrowserMainRunner::Create());
 
   int exit_code = main_runner_->Initialize(parameters);
 
   if (exit_code >= 0)
     return exit_code;
 
   if (CommandLine::ForCurrentProcess()->HasSwitch(
         switches::kCheckLayoutTestSysDeps)) {
     return 0;
   }
 
   bool layout_test_mode =
       CommandLine::ForCurrentProcess()->HasSwitch(switches::kDumpRenderTree);
 
   if (layout_test_mode) {
     char test_string[2048];
     content::ShellBrowserContext* browser_context =
         static_cast<content::ShellContentBrowserClient*>(
             content::GetContentClient()->browser())->browser_context();
 
+#if defined(OS_ANDROID)
+    puts("#READY");
+    fflush(stdout);
+#endif
+
     while (fgets(test_string, sizeof(test_string), stdin)) {
       char *new_line_position = strchr(test_string, '\n');
       if (new_line_position)
         *new_line_position = '\0';
       if (test_string[0] == '\0')
         continue;
 
       // Test header.
       printf("Content-Type: text/plain\n");
 
@@ skipping 17 matching lines @@
     }
     exit_code = 0;
   } else {
     exit_code = main_runner_->Run();
   }
 
   main_runner_->Shutdown();
 
   return exit_code;
 }