Fix FakeDriveService's behavior to be more correct.

chrome/browser/google_apis/fake_drive_service.cc

Index: chrome/browser/google_apis/fake_drive_service.cc
diff --git a/chrome/browser/google_apis/fake_drive_service.cc b/chrome/browser/google_apis/fake_drive_service.cc
index ee021776ae2f614afdc44085dc61948ad721d04e..35bc57870e12a2c56cfd3a62060656b0cc5f52dd 100644
--- a/chrome/browser/google_apis/fake_drive_service.cc
+++ b/chrome/browser/google_apis/fake_drive_service.cc
@@ -810,8 +810,8 @@ void FakeDriveService::InitiateUploadNewFile(
     return;
   }
 
-  DictionaryValue* entry = FindEntryByResourceId(parent_resource_id);
-  if (!entry) {
+  if (parent_resource_id != GetRootResourceId() &&
+      !FindEntryByResourceId(parent_resource_id)) {
     MessageLoop::current()->PostTask(
         FROM_HERE,
         base::Bind(callback, HTTP_NOT_FOUND, GURL()));
@@ -918,7 +918,7 @@ void FakeDriveService::InitiateUploadExistingFile(
 
   std::string entry_etag;
   entry->GetString("gd$etag", &entry_etag);
-  if (etag != entry_etag) {
+  if (!etag.empty() && etag != entry_etag) {
     MessageLoop::current()->PostTask(
         FROM_HERE,
         base::Bind(callback, HTTP_PRECONDITION, GURL()));