Move most of ChromeV8Context to a base ScriptContext

This also moves ModuleSystem, RequestSender,
ObjectBackedNativeHandler, and SafeBuiltins
over to //extensions.

Other renderer code is updated minimally to support
these changes.

BUG=359836
TBR=sky@chromium.org for chrome/test
TBR=jamescook@chromium.org for apps/shell
TBR=maruel@chromium.org for PRESUBMIT.py

Review URL: https://codereview.chromium.org/234413005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@263429 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 188 insertions, 0 deletions

diff --git a/extensions/renderer/console.cc b/extensions/renderer/console.cc
new file mode 100644
index 0000000..c9f03f5
--- /dev/null
+++ b/extensions/renderer/console.cc
@@ -0,0 +1,188 @@
+// Copyright 2014 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 "extensions/renderer/console.h"
+
+#include "base/compiler_specific.h"
+#include "base/debug/alias.h"
+#include "base/lazy_instance.h"
+#include "base/strings/string_util.h"
+#include "base/strings/stringprintf.h"
+#include "base/strings/utf_string_conversions.h"
+#include "chrome/renderer/extensions/dispatcher.h"
+#include "chrome/renderer/extensions/extension_helper.h"
+#include "content/public/renderer/render_view.h"
+#include "content/public/renderer/render_view_visitor.h"
+#include "third_party/WebKit/public/web/WebConsoleMessage.h"
+#include "third_party/WebKit/public/web/WebFrame.h"
+#include "third_party/WebKit/public/web/WebView.h"
+
+namespace extensions {
+namespace console {
+
+namespace {
+
+// Finds the RenderView associated with a context. Note: there will be multiple
+// contexts in each RenderView.
+class ByContextFinder : public content::RenderViewVisitor {
+ public:
+  static content::RenderView* Find(v8::Handle<v8::Context> context) {
+    ByContextFinder finder(context);
+    content::RenderView::ForEach(&finder);
+    return finder.found_;
+  }
+
+ private:
+  explicit ByContextFinder(v8::Handle<v8::Context> context)
+      : context_(context), found_(NULL) {}
+
+  virtual bool Visit(content::RenderView* render_view) OVERRIDE {
+    ExtensionHelper* helper = ExtensionHelper::Get(render_view);
+    if (helper &&
+        helper->dispatcher()->v8_context_set().GetByV8Context(context_)) {
+      found_ = render_view;
+    }
+    return !found_;
+  }
+
+  v8::Handle<v8::Context> context_;
+  content::RenderView* found_;
+
+  DISALLOW_COPY_AND_ASSIGN(ByContextFinder);
+};
+
+// Writes |message| to stack to show up in minidump, then crashes.
+void CheckWithMinidump(const std::string& message) {
+  char minidump[1024];
+  base::debug::Alias(&minidump);
+  base::snprintf(
+      minidump, arraysize(minidump), "e::console: %s", message.c_str());
+  CHECK(false) << message;
+}
+
+typedef void (*LogMethod)(v8::Handle<v8::Context> context,
+                          const std::string& message);
+
+void BoundLogMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& info) {
+  LogMethod log_method =
+      reinterpret_cast<LogMethod>(info.Data().As<v8::External>()->Value());
+  std::string message;
+  for (int i = 0; i < info.Length(); ++i) {
+    if (i > 0)
+      message += " ";
+    message += *v8::String::Utf8Value(info[i]);
+  }
+  (*log_method)(info.GetIsolate()->GetCallingContext(), message);
+}
+
+void BindLogMethod(v8::Isolate* isolate,
+                   v8::Local<v8::Object> target,
+                   const std::string& name,
+                   LogMethod log_method) {
+  v8::Local<v8::FunctionTemplate> tmpl = v8::FunctionTemplate::New(
+      isolate,
+      &BoundLogMethodCallback,
+      v8::External::New(isolate, reinterpret_cast<void*>(log_method)));
+  target->Set(v8::String::NewFromUtf8(isolate, name.c_str()),
+              tmpl->GetFunction());
+}
+
+}  // namespace
+
+void Debug(content::RenderView* render_view, const std::string& message) {
+  AddMessage(render_view, content::CONSOLE_MESSAGE_LEVEL_DEBUG, message);
+}
+
+void Log(content::RenderView* render_view, const std::string& message) {
+  AddMessage(render_view, content::CONSOLE_MESSAGE_LEVEL_LOG, message);
+}
+
+void Warn(content::RenderView* render_view, const std::string& message) {
+  AddMessage(render_view, content::CONSOLE_MESSAGE_LEVEL_WARNING, message);
+}
+
+void Error(content::RenderView* render_view, const std::string& message) {
+  AddMessage(render_view, content::CONSOLE_MESSAGE_LEVEL_ERROR, message);
+}
+
+void Fatal(content::RenderView* render_view, const std::string& message) {
+  Error(render_view, message);
+  CheckWithMinidump(message);
+}
+
+void AddMessage(content::RenderView* render_view,
+                content::ConsoleMessageLevel level,
+                const std::string& message) {
+  blink::WebView* web_view = render_view->GetWebView();
+  if (!web_view || !web_view->mainFrame())
+    return;
+  blink::WebConsoleMessage::Level target_level =
+      blink::WebConsoleMessage::LevelLog;
+  switch (level) {
+    case content::CONSOLE_MESSAGE_LEVEL_DEBUG:
+      target_level = blink::WebConsoleMessage::LevelDebug;
+      break;
+    case content::CONSOLE_MESSAGE_LEVEL_LOG:
+      target_level = blink::WebConsoleMessage::LevelLog;
+      break;
+    case content::CONSOLE_MESSAGE_LEVEL_WARNING:
+      target_level = blink::WebConsoleMessage::LevelWarning;
+      break;
+    case content::CONSOLE_MESSAGE_LEVEL_ERROR:
+      target_level = blink::WebConsoleMessage::LevelError;
+      break;
+  }
+  web_view->mainFrame()->addMessageToConsole(
+      blink::WebConsoleMessage(target_level, base::UTF8ToUTF16(message)));
+}
+
+void Debug(v8::Handle<v8::Context> context, const std::string& message) {
+  AddMessage(context, content::CONSOLE_MESSAGE_LEVEL_DEBUG, message);
+}
+
+void Log(v8::Handle<v8::Context> context, const std::string& message) {
+  AddMessage(context, content::CONSOLE_MESSAGE_LEVEL_LOG, message);
+}
+
+void Warn(v8::Handle<v8::Context> context, const std::string& message) {
+  AddMessage(context, content::CONSOLE_MESSAGE_LEVEL_WARNING, message);
+}
+
+void Error(v8::Handle<v8::Context> context, const std::string& message) {
+  AddMessage(context, content::CONSOLE_MESSAGE_LEVEL_ERROR, message);
+}
+
+void Fatal(v8::Handle<v8::Context> context, const std::string& message) {
+  Error(context, message);
+  CheckWithMinidump(message);
+}
+
+void AddMessage(v8::Handle<v8::Context> context,
+                content::ConsoleMessageLevel level,
+                const std::string& message) {
+  if (context.IsEmpty()) {
+    LOG(WARNING) << "Could not log \"" << message << "\": no context given";
+    return;
+  }
+  content::RenderView* render_view = ByContextFinder::Find(context);
+  if (!render_view) {
+    LOG(WARNING) << "Could not log \"" << message << "\": no render view found";
+    return;
+  }
+  AddMessage(render_view, level, message);
+}
+
+v8::Local<v8::Object> AsV8Object() {
+  v8::Isolate* isolate = v8::Isolate::GetCurrent();
+  v8::EscapableHandleScope handle_scope(isolate);
+  v8::Local<v8::Object> console_object = v8::Object::New(isolate);
+  BindLogMethod(isolate, console_object, "debug", &Debug);
+  BindLogMethod(isolate, console_object, "log", &Log);
+  BindLogMethod(isolate, console_object, "warn", &Warn);
+  BindLogMethod(isolate, console_object, "error", &Error);
+  return handle_scope.Escape(console_object);
+}
+
+}  // namespace console
+}  // namespace extensions