Chromecast: initial checkin of Android-based cast shell.

chromecast/shell/app/cast_main_delegate.cc

Index: chromecast/shell/app/cast_main_delegate.cc
diff --git a/chromecast/shell/app/cast_main_delegate.cc b/chromecast/shell/app/cast_main_delegate.cc
index 1fb2ad773a4aa763e804c46b4fa40983bd7070a7..f713f5bffe5853798fcceb45c0ae13ffd1bbe453 100644
--- a/chromecast/shell/app/cast_main_delegate.cc
+++ b/chromecast/shell/app/cast_main_delegate.cc
@@ -4,12 +4,16 @@
 
 #include "chromecast/shell/app/cast_main_delegate.h"
 
+#include "base/cpu.h"
 #include "base/logging.h"
 #include "base/path_service.h"
+#include "base/posix/global_descriptors.h"
 #include "chromecast/common/cast_paths.h"
 #include "chromecast/common/cast_resource_delegate.h"
+#include "chromecast/common/global_descriptors.h"
 #include "chromecast/shell/browser/cast_content_browser_client.h"
 #include "chromecast/shell/renderer/cast_content_renderer_client.h"
+#include "content/public/browser/browser_main_runner.h"
 #include "content/public/common/content_switches.h"
 #include "ui/base/resource/resource_bundle.h"
 
@@ -23,26 +27,74 @@ CastMainDelegate::~CastMainDelegate() {
 }
 
 bool CastMainDelegate::BasicStartupComplete(int* exit_code) {
+  RegisterPathProvider();
+
   logging::LoggingSettings settings;
+#if defined(OS_ANDROID)
+  base::FilePath log_file;
+  PathService::Get(FILE_CAST_ANDROID_LOG, &log_file);
+  settings.logging_dest = logging::LOG_TO_ALL;
+  settings.log_file = log_file.value().c_str();
+  settings.delete_old = logging::DELETE_OLD_LOG_FILE;
+#else
   settings.logging_dest = logging::LOG_TO_SYSTEM_DEBUG_LOG;
+#endif  // defined(OS_ANDROID)
   logging::InitLogging(settings);
   // Time, process, and thread ID are available through logcat.
   logging::SetLogItems(true, true, false, false);
 
-  RegisterPathProvider();
-
   content::SetContentClient(&content_client_);
   return false;
 }
 
 void CastMainDelegate::PreSandboxStartup() {
+#if defined(ARCH_CPU_ARM_FAMILY) && (defined(OS_ANDROID) || defined(OS_LINUX))
+  // Create an instance of the CPU class to parse /proc/cpuinfo and cache the
+  // results. This data needs to be cached when file-reading is still allowed,
+  // since base::CPU expects to be callable later, when file-reading is no
+  // longer allowed.
+  base::CPU cpu_info;
+#endif
+
   InitializeResourceBundle();
 }
 
+int CastMainDelegate::RunProcess(
+    const std::string& process_type,
+    const content::MainFunctionParams& main_function_params) {
+#if defined(OS_ANDROID)
+  if (!process_type.empty())
+    return -1;
+
+  // Note: Android must handle running its own browser process.
+  // See ChromeMainDelegateAndroid::RunProcess.
+  browser_runner_.reset(content::BrowserMainRunner::Create());
+  return browser_runner_->Initialize(main_function_params);
+#else
+  return -1;
+#endif  // defined(OS_ANDROID)
+}
+
+#if !defined(OS_ANDROID)
 void CastMainDelegate::ZygoteForked() {
 }
+#endif  // !defined(OS_ANDROID)
 
 void CastMainDelegate::InitializeResourceBundle() {
+#if defined(OS_ANDROID)
+  // On Android, the renderer runs with a different UID and can never access
+  // the file system. Use the file descriptor passed in at launch time.
+  int pak_fd =
+      base::GlobalDescriptors::GetInstance()->MaybeGet(kAndroidPakDescriptor);
+  if (pak_fd >= 0) {
+    ui::ResourceBundle::InitSharedInstanceWithPakFileRegion(
+        base::File(pak_fd), base::MemoryMappedFile::Region::kWholeFile);
+    ui::ResourceBundle::GetSharedInstance().AddDataPackFromFile(
+        base::File(pak_fd), ui::SCALE_FACTOR_100P);
+    return;
+  }
+#endif
+
   resource_delegate_.reset(new CastResourceDelegate());
   // TODO(gunsch): Use LOAD_COMMON_RESOURCES once ResourceBundle no longer
   // hardcodes resource file names.