Implement Mojo message codec in JavaScript

This CL contains an encoder and decoder for the Mojo message IPC format.  I've
tested the encoder and decoder against each other, but I haven't yet tested them
against the C++ implementation.

I haven't tried to tune the encoder or decoder for performance. IMHO, we should
work on that after getting correctness.

The C++ code for JSTest.codec is a bit verbose because the C++ code need to
load all the dependencies for codec_unittests.js. A better approach is to teach
the system how to load dependencies from the file system, but I've left that for
a future CL.

BUG=317398
R=aa@chromium.org

Review URL: https://codereview.chromium.org/69843003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235838 0039d316-1c4b-4281-b951-d872f2087c98

4 files changed, 12 insertions, 16 deletions

diff --git a/gin/test/file_runner.cc b/gin/test/file_runner.cc
index a343d64..dd0ca66 100644
--- a/gin/test/file_runner.cc
+++ b/gin/test/file_runner.cc
@@ -27,28 +27,19 @@ base::FilePath GetModuleBase() {
 
 FileRunnerDelegate::FileRunnerDelegate()
     : ModuleRunnerDelegate(GetModuleBase()) {
+  AddBuiltinModule(GTest::kModuleName, GTest::GetTemplate);
 }
 
 FileRunnerDelegate::~FileRunnerDelegate() {
 }
 
-void FileRunnerDelegate::DidCreateContext(Runner* runner) {
-  ModuleRunnerDelegate::DidCreateContext(runner);
-
-  v8::Handle<v8::Context> context = runner->context();
-  ModuleRegistry* registry = ModuleRegistry::From(context);
-
-  registry->AddBuiltinModule(runner->isolate(), "gtest",
-                             GetGTestTemplate(runner->isolate()));
-}
-
 void FileRunnerDelegate::UnhandledException(Runner* runner,
                                             TryCatch& try_catch) {
   ModuleRunnerDelegate::UnhandledException(runner, try_catch);
   EXPECT_FALSE(try_catch.HasCaught()) << try_catch.GetPrettyMessage();
 }
 
-void RunTestFromFile(const base::FilePath& path, RunnerDelegate* delegate) {
+void RunTestFromFile(const base::FilePath& path, FileRunnerDelegate* delegate) {
   ASSERT_TRUE(base::PathExists(path)) << path.LossyDisplayName();
   std::string source;
   ASSERT_TRUE(ReadFileToString(path, &source));
diff --git a/gin/test/file_runner.h b/gin/test/file_runner.h
index b00e089..c4164f5 100644
--- a/gin/test/file_runner.h
+++ b/gin/test/file_runner.h
@@ -19,13 +19,12 @@ class FileRunnerDelegate : public ModuleRunnerDelegate {
 
  private:
   // From ModuleRunnerDelegate:
-  virtual void DidCreateContext(Runner* runner) OVERRIDE;
   virtual void UnhandledException(Runner* runner, TryCatch& try_catch) OVERRIDE;
 
   DISALLOW_COPY_AND_ASSIGN(FileRunnerDelegate);
 };
 
-void RunTestFromFile(const base::FilePath& path, RunnerDelegate* delegate);
+void RunTestFromFile(const base::FilePath& path, FileRunnerDelegate* delegate);
 
 }  // namespace gin
 
diff --git a/gin/test/gtest.cc b/gin/test/gtest.cc
index 2d77563..d600418 100644
--- a/gin/test/gtest.cc
+++ b/gin/test/gtest.cc
@@ -54,9 +54,11 @@ void ExpectEqual(const v8::FunctionCallbackInfo<v8::Value>& info) {
 
 WrapperInfo g_gtest_wrapper_info = {};
 
-}
+}  // namespace
+
+const char GTest::kModuleName[] = "gtest";
 
-v8::Local<v8::ObjectTemplate> GetGTestTemplate(v8::Isolate* isolate) {
+v8::Local<v8::ObjectTemplate> GTest::GetTemplate(v8::Isolate* isolate) {
   PerIsolateData* data = PerIsolateData::From(isolate);
   v8::Local<v8::ObjectTemplate> templ = data->GetObjectTemplate(
       &g_gtest_wrapper_info);
diff --git a/gin/test/gtest.h b/gin/test/gtest.h
index e4ad534..ee19b71 100644
--- a/gin/test/gtest.h
+++ b/gin/test/gtest.h
@@ -9,7 +9,11 @@
 
 namespace gin {
 
-v8::Local<v8::ObjectTemplate> GetGTestTemplate(v8::Isolate* isolate);
+class GTest {
+ public:
+  static const char kModuleName[];
+  static v8::Local<v8::ObjectTemplate> GetTemplate(v8::Isolate* isolate);
+};
 
 }  // namespace gin