[WIP]Implement Chromium side changes for navigator.language(s) support for workers.

content/browser/shared_worker/shared_worker_host.cc

Index: content/browser/shared_worker/shared_worker_host.cc
diff --git a/content/browser/shared_worker/shared_worker_host.cc b/content/browser/shared_worker/shared_worker_host.cc
index 3dd43eb1eae2d890187c2525d4d0a644eac94251..90f90bae3a95939c436a9f8e701e2cdb3bd180a1 100644
--- a/content/browser/shared_worker/shared_worker_host.cc
+++ b/content/browser/shared_worker/shared_worker_host.cc
@@ -5,6 +5,8 @@
 #include "content/browser/shared_worker/shared_worker_host.h"
 
 #include "base/metrics/histogram.h"
+#include "base/strings/string_split.h"
+#include "base/strings/utf_string_conversions.h"
 #include "content/browser/devtools/embedded_worker_devtools_manager.h"
 #include "content/browser/frame_host/render_frame_host_delegate.h"
 #include "content/browser/frame_host/render_frame_host_impl.h"
@@ -18,7 +20,10 @@
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/browser/render_process_host.h"
+#include "content/public/browser/resource_context.h"
 #include "content/public/common/content_client.h"
+#include "net/url_request/static_http_user_agent_settings.h"
+#include "net/url_request/url_request_context.h"
 
 namespace content {
 namespace {
@@ -72,6 +77,30 @@ void NotifyWorkerDestroyed(int worker_process_id, int worker_route_id) {
 
 }  // namespace
 
+static std::string HttpAcceptHeaderToAcceptLanguagesString(
+  const std::string& http_accept_languages,const std::string& default_language)
+{
+    std::vector<string> languages;
+
+    if (!http_accept_languages.length()) {
+        return default_language;
+    }
+    base::SplitString(http_accept_languages, ',', &languages);
+
+    std::string accept_languages_string;
+    for(unsigned int i = 0; i < languages.size(); i++) {
+        std::string lang = languages[i];
+        size_t semi_colon_pos = lang.find(";");
+        if(semi_colon_pos != string::npos)
+            lang.erase(semi_colon_pos, lang.length() - semi_colon_pos);
+        accept_languages_string.append(lang);
+        if(i != languages.size() - 1){
+          accept_languages_string.append(1, ',');
+        }
+    }
+    return accept_languages_string;
+}
+
 SharedWorkerHost::SharedWorkerHost(SharedWorkerInstance* instance,
                                    SharedWorkerMessageFilter* filter,
                                    int worker_route_id)
@@ -128,6 +157,12 @@ void SharedWorkerHost::Start(bool pause_on_start) {
   params.security_policy_type = instance_->security_policy_type();
   params.pause_on_start = pause_on_start;
   params.route_id = worker_route_id_;
+  net::URLRequestContext* req_context =
+                            instance_->resource_context()->GetRequestContext();
+  std::string accept_languages_string = HttpAcceptHeaderToAcceptLanguagesString(
+    req_context->http_user_agent_settings()->GetAcceptLanguage()
+    , GetContentClient()->browser()->GetApplicationLocale());
+  params.accept_languages = base::UTF8ToUTF16(accept_languages_string);
   Send(new WorkerProcessMsg_CreateWorker(params));
 
   for (FilterList::const_iterator i = filters_.begin(); i != filters_.end();
@@ -366,4 +401,18 @@ void SharedWorkerHost::SetMessagePortID(SharedWorkerMessageFilter* filter,
   }
 }
 
+void SharedWorkerHost::AcceptLanguageChanged(const base::string16& languages)
+{
+  WorkerProcessMsg_LanguageChange_Params params;
+  params.route_id = worker_route_id_;
+  net::URLRequestContext* req_context =
+                            instance_->resource_context()->GetRequestContext();
+  std::string accept_languages_string = HttpAcceptHeaderToAcceptLanguagesString(
+    req_context->http_user_agent_settings()->GetAcceptLanguage()
+    , GetContentClient()->browser()->GetApplicationLocale());
+  params.accept_languages = base::UTF8ToUTF16(accept_languages_string);
+  Send(new WorkerProcessMsg_LanguageChange(params));
+}
+
+
 }  // namespace content