Fix crash in Cronet CreateUrlRequestAdapter.

- Initialize URL standard schemes on load.
- Use NULL-resistant string conversions.

BUG=410374

Review URL: https://codereview.chromium.org/536023003

Cr-Commit-Position: refs/heads/master@{#293220}

components/cronet/android/chromium_url_request.cc

@@ -45,10 +45,8 @@ void SetPostContentType(JNIEnv* env,
   request->SetMethod(method_post);
 
   std::string content_type_header("Content-Type");
-
-  const char* content_type_utf8 = env->GetStringUTFChars(content_type, NULL);
-  std::string content_type_string(content_type_utf8);
-  env->ReleaseStringUTFChars(content_type, content_type_utf8);
+  std::string content_type_string(
+      base::android::ConvertJavaStringToUTF8(env, content_type));
 
   request->AddHeader(content_type_header, content_type_string);
 }
@@ -120,13 +118,9 @@ static jlong CreateRequestAdapter(JNIEnv* env,
       reinterpret_cast<URLRequestContextAdapter*>(urlRequestContextAdapter);
   DCHECK(context != NULL);
 
-  const char* url_utf8 = env->GetStringUTFChars(url_string, NULL);
-
-  VLOG(1) << "New chromium network request. URL:" << url_utf8;
-
-  GURL url(url_utf8);
+  GURL url(base::android::ConvertJavaStringToUTF8(env, url_string));
 
-  env->ReleaseStringUTFChars(url_string, url_utf8);
+  VLOG(1) << "New chromium network request: " << url.possibly_invalid_spec();
 
   URLRequestAdapter* adapter =
       new URLRequestAdapter(context,

components/cronet/android/cronet_jni.cc

@@ -10,6 +10,7 @@
 #include "components/cronet/android/chromium_url_request_context.h"
 #include "net/android/net_jni_registrar.h"
 #include "url/android/url_jni_registrar.h"
+#include "url/url_util.h"
 
 #if !defined(USE_ICU_ALTERNATIVES_ON_ANDROID)
 #include "base/i18n/icu_util.h"
@@ -49,6 +50,8 @@ extern "C" jint JNI_OnLoad(JavaVM* vm, void* reserved) {
   base::i18n::InitializeICU();
 #endif
 
+  url::Initialize();
+
   return JNI_VERSION_1_6;
 }