Implement GetInitiateUpload{New,Existing}FileUrl on Drive API v2.

chrome/browser/google_apis/drive_api_url_generator.cc

Index: chrome/browser/google_apis/drive_api_url_generator.cc
diff --git a/chrome/browser/google_apis/drive_api_url_generator.cc b/chrome/browser/google_apis/drive_api_url_generator.cc
index 7dc911d1feddb49912bc993fc8462722ff9881af..5387033e390c44667b6569034313a3e1c63c34ec 100644
--- a/chrome/browser/google_apis/drive_api_url_generator.cc
+++ b/chrome/browser/google_apis/drive_api_url_generator.cc
@@ -23,6 +23,13 @@ const char kDriveV2ChildrenUrlFormat[] = "/drive/v2/files/%s/children";
 const char kDriveV2ChildrenUrlForRemovalFormat[] =
     "/drive/v2/files/%s/children/%s";
 const char kDriveV2FileTrashUrlFormat[] = "/drive/v2/files/%s/trash";
+const char kDriveV2InitiateUploadNewFileUrl[] = "/upload/drive/v2/files";
+const char kDriveV2InitiateUploadExistingFileUrlPrefix[] =
+    "/upload/drive/v2/files/";
+
+GURL AddResumableUploadParam(const GURL& url) {
+  return net::AppendOrReplaceQueryParameter(url, "uploadType", "resumable");
+}
 
 }  // namespace
 
@@ -96,4 +103,17 @@ GURL DriveApiUrlGenerator::GetChildrenUrlForRemoval(
                          net::EscapePath(child_id).c_str()));
 }
 
+GURL DriveApiUrlGenerator::GetInitiateUploadNewFileUrl() const {
+  return AddResumableUploadParam(
+      base_url_.Resolve(kDriveV2InitiateUploadNewFileUrl));
+}
+
+GURL DriveApiUrlGenerator::GetInitiateUploadExistingFileUrl(
+    const std::string& resource_id) const {
+  const GURL& url = base_url_.Resolve(
+      kDriveV2InitiateUploadExistingFileUrlPrefix +
+      net::EscapePath(resource_id));
+  return AddResumableUploadParam(url);
+}
+
 }  // namespace google_apis