Move file_handlers API from //chrome to //extensions

extensions/browser/api/file_handlers/mime_util.cc

 // Copyright 2013 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/extensions/api/file_handlers/mime_util.h"
+#include "extensions/browser/api/file_handlers/mime_util.h"
 
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "build/build_config.h"
-#include "chrome/browser/profiles/profile.h"
+#include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_thread.h"
 #include "net/base/filename_util.h"
 #include "net/base/mime_sniffer.h"
 #include "net/base/mime_util.h"
 #include "storage/browser/fileapi/file_system_url.h"
 
 #if defined(OS_CHROMEOS)
 #include "extensions/browser/api/extensions_api_client.h"
 #include "extensions/browser/api/file_handlers/non_native_file_system_delegate.h"
 #endif
 
 using content::BrowserThread;
 
 namespace {
 
 const char kMimeTypeApplicationOctetStream[] = "application/octet-stream";
 
 }  // namespace
 
 namespace extensions {
 namespace app_file_handler_util {
 namespace {
 
 // Detects MIME type by reading initial bytes from the file. If found, then
 // writes the MIME type to |result|.
 void SniffMimeType(const base::FilePath& local_path, std::string* result) {
   std::vector<char> content(net::kMaxBytesToSniff);
 
   const int bytes_read =
-      base::ReadFile(local_path, &content[0], content.size());
+      base::ReadFile(local_path, &content[0], static_cast<int>(content.size()));
 
   if (bytes_read >= 0) {
-    net::SniffMimeType(&content[0],
-                       bytes_read,
+    net::SniffMimeType(&content[0], bytes_read,
                        net::FilePathToFileURL(local_path),
                        std::string(),  // type_hint (passes no hint)
                        result);
   }
 }
 
 #if defined(OS_CHROMEOS)
 // Converts a result passed as a scoped pointer to a dereferenced value passed
 // to |callback|.
 void OnGetMimeTypeFromFileForNonNativeLocalPathCompleted(
@@ skipping 14 matching lines @@
     callback.Run(mime_type);
     return;
   }
 
   // MIME type not available with metadata, hence try to guess it from the
   // file's extension.
   std::unique_ptr<std::string> mime_type_from_extension(new std::string);
   std::string* const mime_type_from_extension_ptr =
       mime_type_from_extension.get();
   BrowserThread::PostBlockingPoolTaskAndReply(
-      FROM_HERE,
-      base::Bind(base::IgnoreResult(&net::GetMimeTypeFromFile),
-                 local_path,
-                 mime_type_from_extension_ptr),
+      FROM_HERE, base::Bind(base::IgnoreResult(&net::GetMimeTypeFromFile),
+                            local_path, mime_type_from_extension_ptr),
       base::Bind(&OnGetMimeTypeFromFileForNonNativeLocalPathCompleted,
-                 base::Passed(&mime_type_from_extension),
-                 callback));
+                 base::Passed(&mime_type_from_extension), callback));
 }
 #endif
 
 // Called when sniffing for MIME type in the native local file is completed.
 void OnSniffMimeTypeForNativeLocalPathCompleted(
     std::unique_ptr<std::string> mime_type,
     const base::Callback<void(const std::string&)>& callback) {
   // Do not return application/zip as sniffed result. If the file has .zip
   // extension, it should be already returned as application/zip. If the file
   // does not have .zip extension and couldn't find mime type from the
@@ skipping 17 matching lines @@
     const base::Callback<void(const std::string&)>& callback) {
   if (!mime_type->empty()) {
     callback.Run(*mime_type);
     return;
   }
 
   std::unique_ptr<std::string> sniffed_mime_type(
       new std::string(kMimeTypeApplicationOctetStream));
   std::string* const sniffed_mime_type_ptr = sniffed_mime_type.get();
   BrowserThread::PostBlockingPoolTaskAndReply(
-      FROM_HERE,
-      base::Bind(&SniffMimeType, local_path, sniffed_mime_type_ptr),
+      FROM_HERE, base::Bind(&SniffMimeType, local_path, sniffed_mime_type_ptr),
       base::Bind(&OnSniffMimeTypeForNativeLocalPathCompleted,
-                 base::Passed(&sniffed_mime_type),
-                 callback));
+                 base::Passed(&sniffed_mime_type), callback));
 }
 
 // Fetches MIME type for a local path and returns it with a |callback|.
 void GetMimeTypeForLocalPath(
-    Profile* profile,
+    content::BrowserContext* context,
     const base::FilePath& local_path,
     const base::Callback<void(const std::string&)>& callback) {
 #if defined(OS_CHROMEOS)
   NonNativeFileSystemDelegate* delegate =
       ExtensionsAPIClient::Get()->GetNonNativeFileSystemDelegate();
-  if (delegate && delegate->IsUnderNonNativeLocalPath(profile, local_path)) {
+  if (delegate && delegate->IsUnderNonNativeLocalPath(context, local_path)) {
     // For non-native files, try to get the MIME type from metadata. If not
     // available, then try to guess from the extension. Never sniff (because
     // it can be very slow).
     delegate->GetNonNativeLocalPathMimeType(
-        profile,
-        local_path,
+        context, local_path,
         base::Bind(&OnGetMimeTypeFromMetadataForNonNativeLocalPathCompleted,
-                   local_path,
-                   callback));
+                   local_path, callback));
     return;
   }
 #endif
 
   // For native local files, try to guess the mime from the extension. If
   // not available, then try to sniff if.
   std::unique_ptr<std::string> mime_type_from_extension(new std::string);
   std::string* const mime_type_from_extension_ptr =
       mime_type_from_extension.get();
   BrowserThread::PostBlockingPoolTaskAndReply(
-      FROM_HERE,
-      base::Bind(base::IgnoreResult(&net::GetMimeTypeFromFile),
-                 local_path,
-                 mime_type_from_extension_ptr),
-      base::Bind(&OnGetMimeTypeFromFileForNativeLocalPathCompleted,
-                 local_path,
-                 base::Passed(&mime_type_from_extension),
-                 callback));
+      FROM_HERE, base::Bind(base::IgnoreResult(&net::GetMimeTypeFromFile),
+                            local_path, mime_type_from_extension_ptr),
+      base::Bind(&OnGetMimeTypeFromFileForNativeLocalPathCompleted, local_path,
+                 base::Passed(&mime_type_from_extension), callback));
 }
 
-MimeTypeCollector::MimeTypeCollector(Profile* profile)
-    : profile_(profile), left_(0), weak_ptr_factory_(this) {
-}
+MimeTypeCollector::MimeTypeCollector(content::BrowserContext* context)
+    : context_(context), left_(0), weak_ptr_factory_(this) {}
 
-MimeTypeCollector::~MimeTypeCollector() {
-}
+MimeTypeCollector::~MimeTypeCollector() {}
 
 void MimeTypeCollector::CollectForURLs(
     const std::vector<storage::FileSystemURL>& urls,
     const CompletionCallback& callback) {
   std::vector<base::FilePath> local_paths;
   for (size_t i = 0; i < urls.size(); ++i) {
     local_paths.push_back(urls[i].path());
   }
 
   CollectForLocalPaths(local_paths, callback);
@@ skipping 11 matching lines @@
 
   if (!left_) {
     // Nothing to process.
     base::ThreadTaskRunnerHandle::Get()->PostTask(
         FROM_HERE, base::Bind(callback_, base::Passed(&result_)));
     callback_ = CompletionCallback();
     return;
   }
 
   for (size_t i = 0; i < local_paths.size(); ++i) {
-    GetMimeTypeForLocalPath(profile_,
-                            local_paths[i],
+    GetMimeTypeForLocalPath(context_, local_paths[i],
                             base::Bind(&MimeTypeCollector::OnMimeTypeCollected,
-                                       weak_ptr_factory_.GetWeakPtr(),
-                                       i));
+                                       weak_ptr_factory_.GetWeakPtr(), i));
   }
 }
 
 void MimeTypeCollector::OnMimeTypeCollected(size_t index,
                                             const std::string& mime_type) {
   (*result_)[index] = mime_type;
   if (!--left_) {
     base::ThreadTaskRunnerHandle::Get()->PostTask(
         FROM_HERE, base::Bind(callback_, base::Passed(&result_)));
     // Release the callback to avoid a circullar reference in case an instance
     // of this class is a member of a ref counted class, which instance is bound
     // to this callback.
     callback_ = CompletionCallback();
   }
 }
 
 }  // namespace app_file_handler_util
 }  // namespace extensions