drive: Support authorizing third-party Drive apps for opening files.

google_apis/drive/drive_api_url_generator.cc

Index: google_apis/drive/drive_api_url_generator.cc
diff --git a/google_apis/drive/drive_api_url_generator.cc b/google_apis/drive/drive_api_url_generator.cc
index e9d89d25d55a7851d2092674c4d36bc632807a40..203400d549b558a0e60b2b53ebc9bdab1b45f849 100644
--- a/google_apis/drive/drive_api_url_generator.cc
+++ b/google_apis/drive/drive_api_url_generator.cc
@@ -17,9 +17,6 @@ namespace {
 // Hard coded URLs for communication with a google drive server.
 const char kDriveV2AboutUrl[] = "/drive/v2/about";
 const char kDriveV2AppsUrl[] = "/drive/v2/apps";
-// apps.delete API is exposed through a special endpoint v2internal that
-// is accessible only by the official API key for Chrome.
-const char kDriveV2AppsDeleteUrlFormat[] = "/drive/v2internal/apps/%s";
 const char kDriveV2ChangelistUrl[] = "/drive/v2/changes";
 const char kDriveV2FilesUrl[] = "/drive/v2/files";
 const char kDriveV2FileUrlPrefix[] = "/drive/v2/files/";
@@ -33,6 +30,12 @@ const char kDriveV2InitiateUploadNewFileUrl[] = "/upload/drive/v2/files";
 const char kDriveV2InitiateUploadExistingFileUrlPrefix[] =
     "/upload/drive/v2/files/";
 
+// apps.delete and file.authorize API is exposed through a special endpoint
+// v2internal that is accessible only by the official API key for Chrome.
+const char kDriveV2AppsDeleteUrlFormat[] = "/drive/v2internal/apps/%s";
+const char kDriveV2FilesAuthorizeUrlFormat[] =
+    "/drive/v2internal/files/%s/authorize?appId=%s";
+
 GURL AddResumableUploadParam(const GURL& url) {
   return net::AppendOrReplaceQueryParameter(url, "uploadType", "resumable");
 }
@@ -72,6 +75,14 @@ GURL DriveApiUrlGenerator::GetFilesGetUrl(const std::string& file_id) const {
   return base_url_.Resolve(kDriveV2FileUrlPrefix + net::EscapePath(file_id));
 }
 
+GURL DriveApiUrlGenerator::GetFilesAuthorizeUrl(
+    const std::string& file_id,
+    const std::string& app_id) const {
+  return base_url_.Resolve(base::StringPrintf(kDriveV2FilesAuthorizeUrlFormat,
+                                              net::EscapePath(file_id).c_str(),
+                                              net::EscapePath(app_id).c_str()));
+}
+
 GURL DriveApiUrlGenerator::GetFilesInsertUrl() const {
   return base_url_.Resolve(kDriveV2FilesUrl);
 }