gdata: Fix "save as pdf" to work on Google Drive.

chrome/browser/chromeos/gdata/gdata_util.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/chromeos/gdata/gdata_util.h"
 
 #include <string>
 #include <vector>
 #include <utility>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/json/json_reader.h"
 #include "base/logging.h"
 #include "base/string_number_conversions.h"
 #include "base/string_util.h"
 #include "base/stringprintf.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "base/time.h"
+#include "chrome/browser/chromeos/gdata/file_write_helper.h"
 #include "chrome/browser/chromeos/gdata/gdata.pb.h"
 #include "chrome/browser/chromeos/gdata/gdata_file_system_interface.h"
 #include "chrome/browser/chromeos/gdata/gdata_system_service.h"
 #include "chrome/browser/chromeos/login/user.h"
 #include "chrome/browser/chromeos/login/user_manager.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/common/chrome_switches.h"
@@ skipping 30 matching lines @@
       GDataSystemServiceFactory::GetForProfile(profile);
   return system_service ? system_service->file_system() : NULL;
 }
 
 GDataCache* GetGDataCache(Profile* profile) {
   GDataSystemService* system_service =
       GDataSystemServiceFactory::GetForProfile(profile);
   return system_service ? system_service->cache() : NULL;
 }
 
+FileWriteHelper* GetFileWriteHelper(Profile* profile) {
+  GDataSystemService* system_service =
+      GDataSystemServiceFactory::GetForProfile(profile);
+  return system_service ? system_service->file_write_helper() : NULL;
+}
+
 void GetHostedDocumentURLBlockingThread(const FilePath& gdata_cache_path,
                                         GURL* url) {
   std::string json;
   if (!file_util::ReadFileToString(gdata_cache_path, &json)) {
     NOTREACHED() << "Unable to read file " << gdata_cache_path.value();
     return;
   }
   DVLOG(1) << "Hosted doc content " << json;
   scoped_ptr<base::Value> val(base::JSONReader::Read(json));
   base::DictionaryValue* dict_val;
@@ skipping 488 matching lines @@
 
 std::string FormatTimeAsString(const base::Time& time) {
   base::Time::Exploded exploded;
   time.UTCExplode(&exploded);
   return base::StringPrintf(
       "%04d-%02d-%02dT%02d:%02d:%02d.%03dZ",
       exploded.year, exploded.month, exploded.day_of_month,
       exploded.hour, exploded.minute, exploded.second, exploded.millisecond);
 }
 
+void PrepareWritableFileAndRun(Profile* profile,
+                               const FilePath& path,
+                               const OpenFileCallback& callback) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  if (IsUnderGDataMountPoint(path)) {
+    FileWriteHelper* file_write_helper = GetFileWriteHelper(profile);
+    if (!file_write_helper)
+      return;
+    FilePath remote_path(ExtractGDataPath(path));
+    file_write_helper->PrepareWritableFileAndRun(remote_path, callback);
+  } else {
+    if (!callback.is_null()) {
+      content::BrowserThread::GetBlockingPool()->PostTask(
+          FROM_HERE, base::Bind(callback, GDATA_FILE_OK, path));
+    }
+  }
+}
+
 }  // namespace util
 }  // namespace gdata