Implement GenerateInitiateUpload{New,Existing}FileUrl.

This is preparation to replace |upload_url| of InitiateUpload methods in
DriveServiceInterface by resource id.

BUG=148632
TEST=Ran unit_tests


Review URL: https://chromiumcodereview.appspot.com/12226073

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@182144 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/google_apis/gdata_wapi_url_generator.cc

@@ -42,6 +42,15 @@ const char kResourceListRootURL[] = "/feeds/default/private/full";
 // Metadata feed with things like user quota.
 const char kAccountMetadataURL[] = "/feeds/metadata/default";
 
+// URL to upload a new file under a particular directory specified by "%s".
+const char kInitiateUploadNewFileURLFormat[] =
+    "/feeds/upload/create-session/default/private/full/%s/contents";
+
+// URL to upload a file content to overwrite a file whose resource id is
+// followed by this prefix.
+const char kInitiateUploadExistingFileURLPrefix[] =
+    "/feeds/upload/create-session/default/private/full/";
+
 #ifndef NDEBUG
 // Use smaller 'page' size while debugging to ensure we hit feed reload
 // almost always. Be careful not to use something too small on account that
@@ -193,6 +202,21 @@ GURL GDataWapiUrlGenerator::GenerateResourceUrlForRemoval(
   return AddStandardUrlParams(result);
 }
 
+GURL GDataWapiUrlGenerator::GenerateInitiateUploadNewFileUrl(
+    const std::string& parent_resource_id) const {
+  GURL result = base_url_.Resolve(
+      base::StringPrintf(kInitiateUploadNewFileURLFormat,
+                         net::EscapePath(parent_resource_id).c_str()));
+  return AddInitiateUploadUrlParams(result);
+}
+
+GURL GDataWapiUrlGenerator::GenerateInitiateUploadExistingFileUrl(
+    const std::string& resource_id) const {
+  GURL result = base_url_.Resolve(
+      kInitiateUploadExistingFileURLPrefix + net::EscapePath(resource_id));
+  return AddInitiateUploadUrlParams(result);
+}
+
 GURL GDataWapiUrlGenerator::GenerateResourceListRootUrl() const {
   return AddStandardUrlParams(base_url_.Resolve(kResourceListRootURL));
 }

chrome/browser/google_apis/gdata_wapi_url_generator.h

@@ -104,6 +104,16 @@ class GDataWapiUrlGenerator {
   GURL GenerateResourceUrlForRemoval(const std::string& parent_resource_id,
                                      const std::string& resource_id) const;
 
+  // Generates a URL to initiate uploading a new file to a directory
+  // specified by |parent_resource_id|.
+  GURL GenerateInitiateUploadNewFileUrl(
+      const std::string& parent_resource_id) const;
+
+  // Generates a URL to initiate uploading file content to overwrite a
+  // file specified by |resource_id|.
+  GURL GenerateInitiateUploadExistingFileUrl(
+      const std::string& resource_id) const;
+
   // Generates a URL for getting the root resource list feed.
   // Used to make changes in the root directory (ex. create a directory in the
   // root directory)

chrome/browser/google_apis/gdata_wapi_url_generator_unittest.cc

@@ -193,6 +193,21 @@ TEST_F(GDataWapiUrlGeneratorTest, GenerateResourceUrlForRemoval) {
           "folder:root", "file:ABCDE").spec());
 }
 
+TEST_F(GDataWapiUrlGeneratorTest, GenerateInitiateUploadNewFileUrl) {
+  EXPECT_EQ(
+      "https://docs.google.com/feeds/upload/create-session/default/private/"
+      "full/folder%3Aabcde/contents?convert=false&v=3&alt=json",
+      url_generator_.GenerateInitiateUploadNewFileUrl("folder:abcde").spec());
+}
+
+TEST_F(GDataWapiUrlGeneratorTest, GenerateInitiateUploadExistingFileUrl) {
+  EXPECT_EQ(
+      "https://docs.google.com/feeds/upload/create-session/default/private/"
+      "full/file%3Aresource_id?convert=false&v=3&alt=json",
+      url_generator_.GenerateInitiateUploadExistingFileUrl(
+          "file:resource_id").spec());
+}
+
 TEST_F(GDataWapiUrlGeneratorTest, GenerateResourceListRootUrl) {
   EXPECT_EQ(
       "https://docs.google.com/feeds/default/private/full?v=3&alt=json",