Logging and check fail crbug/612358

storage/browser/blob/blob_async_builder_host.cc

Index: storage/browser/blob/blob_async_builder_host.cc
diff --git a/storage/browser/blob/blob_async_builder_host.cc b/storage/browser/blob/blob_async_builder_host.cc
index c30b3833e902dff55d669f66baff37664b156c47..8390be46760f9102acc0272a46efdf570c44d8c2 100644
--- a/storage/browser/blob/blob_async_builder_host.cc
+++ b/storage/browser/blob/blob_async_builder_host.cc
@@ -291,6 +291,7 @@ BlobTransportResult BlobAsyncBuilderHost::OnMemoryResponses(
 void BlobAsyncBuilderHost::CancelBuildingBlob(const std::string& uuid,
                                               IPCBlobCreationCancelCode code,
                                               BlobStorageContext* context) {
+  LOG(ERROR) << "Cancelling blob " << uuid;
   DCHECK(context);
   auto state_it = async_blob_map_.find(uuid);
   if (state_it == async_blob_map_.end()) {
@@ -305,6 +306,8 @@ void BlobAsyncBuilderHost::CancelBuildingBlob(const std::string& uuid,
   async_blob_map_.erase(state_it);
 }
 
+
+
 void BlobAsyncBuilderHost::CancelAll(BlobStorageContext* context) {
   DCHECK(context);
   // If the blob still exists in the context (and is being built), then we know
@@ -313,6 +316,8 @@ void BlobAsyncBuilderHost::CancelAll(BlobStorageContext* context) {
   std::vector<std::unique_ptr<BlobDataHandle>> referenced_pending_blobs;
   for (const auto& uuid_state_pair : async_blob_map_) {
     if (context->IsBeingBuilt(uuid_state_pair.first)) {
+      auto* state = uuid_state_pair.second.get();
+      state->LogState();
       referenced_pending_blobs.emplace_back(
           context->GetBlobDataFromUUID(uuid_state_pair.first));
     }
@@ -323,6 +328,8 @@ void BlobAsyncBuilderHost::CancelAll(BlobStorageContext* context) {
   async_blob_map_.clear();
   for (const std::unique_ptr<BlobDataHandle>& handle :
        referenced_pending_blobs) {
+    LOG(ERROR) << "cancelling blob " << handle->uuid()
+               << " which is being expected by someone";
     context->CancelPendingBlob(
         handle->uuid(), IPCBlobCreationCancelCode::SOURCE_DIED_IN_TRANSIT);
   }
@@ -390,6 +397,7 @@ BlobTransportResult BlobAsyncBuilderHost::ContinueBlobMemoryRequests(
         // Since we are only using one handle at a time, transform our handle
         // index correctly back to 0.
         byte_requests->back().handle_index = 0;
+        LOG(ERROR) << uuid << " sending shared memory request";
         break;
       case IPCBlobItemRequestStrategy::FILE:
       case IPCBlobItemRequestStrategy::UNKNOWN: