Make URLRequestContextAdapter initialization asynchronous

components/cronet/android/url_request_adapter.cc

Index: components/cronet/android/url_request_adapter.cc
diff --git a/components/cronet/android/url_request_adapter.cc b/components/cronet/android/url_request_adapter.cc
index 9d9e29b2ce3258ab2a86ee8e506eb99426c7731c..ff98f9098689d115e20165e01ab3c4ce695a616f 100644
--- a/components/cronet/android/url_request_adapter.cc
+++ b/components/cronet/android/url_request_adapter.cc
@@ -76,13 +76,11 @@ void URLRequestAdapter::AppendChunk(const char* bytes, int bytes_len,
   VLOG(1) << "AppendChunk, len: " << bytes_len << ", last: " << is_last_chunk;
   scoped_ptr<char[]> buf(new char[bytes_len]);
   memcpy(buf.get(), bytes, bytes_len);
-  context_->GetNetworkTaskRunner()->PostTask(
-      FROM_HERE,
-      base::Bind(&URLRequestAdapter::OnAppendChunk,
-                 base::Unretained(this),
-                 Passed(buf.Pass()),
-                 bytes_len,
-                 is_last_chunk));
+  context_->RunTask(base::Bind(&URLRequestAdapter::OnAppendChunk,
+                               base::Unretained(this),
+                               Passed(buf.Pass()),
+                               bytes_len,
+                               is_last_chunk));
 }
 
 std::string URLRequestAdapter::GetHeader(const std::string& name) const {
@@ -107,10 +105,8 @@ std::string URLRequestAdapter::GetNegotiatedProtocol() const {
 }
 
 void URLRequestAdapter::Start() {
-  context_->GetNetworkTaskRunner()->PostTask(
-      FROM_HERE,
-      base::Bind(&URLRequestAdapter::OnInitiateConnection,
-                 base::Unretained(this)));
+  context_->RunTask(base::Bind(&URLRequestAdapter::OnInitiateConnection,
+                               base::Unretained(this)));
 }
 
 void URLRequestAdapter::OnAppendChunk(const scoped_ptr<char[]> bytes,
@@ -158,8 +154,7 @@ void URLRequestAdapter::Cancel() {
 
   canceled_ = true;
 
-  context_->GetNetworkTaskRunner()->PostTask(
-      FROM_HERE,
+  context_->RunTask(
       base::Bind(&URLRequestAdapter::OnCancelRequest, base::Unretained(this)));
 }