diff --git a/atom/browser/browser_mac.mm b/atom/browser/browser_mac.mm
index 19b27416a16d..27e347eccebf 100644
--- a/atom/browser/browser_mac.mm
+++ b/atom/browser/browser_mac.mm
@@ -336,10 +336,9 @@ void Browser::SetAboutPanelOptions(const base::DictionaryValue& options) {
   for (base::DictionaryValue::Iterator iter(options); !iter.IsAtEnd();
        iter.Advance()) {
     std::string key = iter.key();
-    std::string value;
-    if (!key.empty() && iter.value().GetAsString(&value)) {
+    if (!key.empty() && iter.value().is_string()) {
       key[0] = base::ToUpperASCII(key[0]);
-      about_panel_options_.SetString(key, value);
+      about_panel_options_.SetString(key, iter.value().GetString());
     }
   }
 }
diff --git a/atom/browser/net/atom_network_delegate.cc b/atom/browser/net/atom_network_delegate.cc
index 10bb5d648291..c142f87c1f5e 100644
--- a/atom/browser/net/atom_network_delegate.cc
+++ b/atom/browser/net/atom_network_delegate.cc
@@ -183,9 +183,10 @@ void ReadFromResponseObject(const base::DictionaryValue& response,
     headers->Clear();
     for (base::DictionaryValue::Iterator it(*dict); !it.IsAtEnd();
          it.Advance()) {
-      std::string value;
-      if (it.value().GetAsString(&value))
+      if (it.value().is_string()) {
+        std::string value = it.value().GetString();
         headers->SetHeader(it.key(), value);
+      }
     }
   }
 }
diff --git a/atom/browser/net/js_asker.cc b/atom/browser/net/js_asker.cc
index daf978082f10..59e3ab881c23 100644
--- a/atom/browser/net/js_asker.cc
+++ b/atom/browser/net/js_asker.cc
@@ -62,8 +62,8 @@ bool IsErrorOptions(base::Value* value, int* error) {
     if (dict->GetInteger("error", error))
       return true;
   } else if (value->is_int()) {
-    if (value->GetAsInteger(error))
-      return true;
+    *error = value->GetInt();
+    return true;
   }
   return false;
 }
diff --git a/atom/browser/net/url_request_async_asar_job.cc b/atom/browser/net/url_request_async_asar_job.cc
index 06959032411d..07962f44f918 100644
--- a/atom/browser/net/url_request_async_asar_job.cc
+++ b/atom/browser/net/url_request_async_asar_job.cc
@@ -7,6 +7,7 @@
 #include <string>
 
 #include "atom/common/atom_constants.h"
+#include "base/strings/utf_string_conversions.h"
 #include "base/task_scheduler/post_task.h"
 
 namespace atom {
@@ -17,12 +18,13 @@ URLRequestAsyncAsarJob::URLRequestAsyncAsarJob(
     : JsAsker<asar::URLRequestAsarJob>(request, network_delegate) {}
 
 void URLRequestAsyncAsarJob::StartAsync(std::unique_ptr<base::Value> options) {
-  base::FilePath::StringType file_path;
+  std::string file_path;
   if (options->is_dict()) {
-    static_cast<base::DictionaryValue*>(options.get())
-        ->GetString("path", &file_path);
+    auto path_value = options->FindKeyOfType("path", base::Value::Type::STRING);
+    if (path_value)
+      file_path = path_value->GetString();
   } else if (options->is_string()) {
-    options->GetAsString(&file_path);
+    file_path = options->GetString();
   }
 
   if (file_path.empty()) {
@@ -33,7 +35,11 @@ void URLRequestAsyncAsarJob::StartAsync(std::unique_ptr<base::Value> options) {
         base::CreateSequencedTaskRunnerWithTraits(
             {base::MayBlock(), base::TaskPriority::USER_VISIBLE,
              base::TaskShutdownBehavior::SKIP_ON_SHUTDOWN}),
+#if defined(OS_WIN)
+        base::FilePath(base::UTF8ToWide(file_path)));
+#else
         base::FilePath(file_path));
+#endif
     asar::URLRequestAsarJob::Start();
   }
 }
diff --git a/atom/browser/net/url_request_string_job.cc b/atom/browser/net/url_request_string_job.cc
index 453dd0bb6615..31381ff11866 100644
--- a/atom/browser/net/url_request_string_job.cc
+++ b/atom/browser/net/url_request_string_job.cc
@@ -25,7 +25,7 @@ void URLRequestStringJob::StartAsync(std::unique_ptr<base::Value> options) {
     dict->GetString("charset", &charset_);
     dict->GetString("data", &data_);
   } else if (options->is_string()) {
-    options->GetAsString(&data_);
+    data_ = options->GetString();
   }
   net::URLRequestSimpleJob::Start();
 }
diff --git a/atom/common/native_mate_converters/v8_value_converter.cc b/atom/common/native_mate_converters/v8_value_converter.cc
index 029742316ce9..3fa070771d68 100644
--- a/atom/common/native_mate_converters/v8_value_converter.cc
+++ b/atom/common/native_mate_converters/v8_value_converter.cc
@@ -163,26 +163,22 @@ v8::Local<v8::Value> V8ValueConverter::ToV8ValueImpl(
       return v8::Null(isolate);
 
     case base::Value::Type::BOOLEAN: {
-      bool val = false;
-      value->GetAsBoolean(&val);
+      bool val = value->GetBool();
       return v8::Boolean::New(isolate, val);
     }
 
     case base::Value::Type::INTEGER: {
-      int val = 0;
-      value->GetAsInteger(&val);
+      int val = value->GetInt();
       return v8::Integer::New(isolate, val);
     }
 
     case base::Value::Type::DOUBLE: {
-      double val = 0.0;
-      value->GetAsDouble(&val);
+      double val = value->GetDouble();
       return v8::Number::New(isolate, val);
     }
 
     case base::Value::Type::STRING: {
-      std::string val;
-      value->GetAsString(&val);
+      std::string val = value->GetString();
       return v8::String::NewFromUtf8(isolate, val.c_str(),
                                      v8::String::kNormalString, val.length());
     }