Change webkit/{fileapi,quota} code to use TaskRunner.

webkit/blob/local_file_reader.cc

Index: webkit/blob/local_file_reader.cc
diff --git a/webkit/blob/local_file_reader.cc b/webkit/blob/local_file_reader.cc
index 068ad13dc83728f2968ff2ed6ae7de627a5dcc71..b46e275d9eefb255660dfb81267865931f7cd568 100644
--- a/webkit/blob/local_file_reader.cc
+++ b/webkit/blob/local_file_reader.cc
@@ -8,8 +8,8 @@
 #include "base/file_util_proxy.h"
 #include "base/location.h"
 #include "base/logging.h"
-#include "base/message_loop_proxy.h"
 #include "base/platform_file.h"
+#include "base/task_runner.h"
 #include "net/base/file_stream.h"
 #include "net/base/io_buffer.h"
 #include "net/base/net_errors.h"
@@ -83,13 +83,13 @@ int LocalFileReader::PlatformFileErrorToNetError(
 // A helper class to open, verify and seek a file stream for a given path.
 class LocalFileReader::OpenFileStreamHelper {
  public:
-  explicit OpenFileStreamHelper(base::MessageLoopProxy* file_thread_proxy)
-      : file_thread_proxy_(file_thread_proxy),
+  explicit OpenFileStreamHelper(base::TaskRunner* task_runner)
+      : task_runner_(task_runner),
         file_handle_(base::kInvalidPlatformFileValue),
         result_(net::OK) {}
   ~OpenFileStreamHelper() {
     if (file_handle_ != base::kInvalidPlatformFileValue) {
-      file_thread_proxy_->PostTask(
+      task_runner_->PostTask(
           FROM_HERE,
           base::Bind(base::IgnoreResult(&base::ClosePlatformFile),
                      file_handle_));
@@ -138,18 +138,18 @@ class LocalFileReader::OpenFileStreamHelper {
   }
 
  private:
-  scoped_refptr<base::MessageLoopProxy> file_thread_proxy_;
+  scoped_refptr<base::TaskRunner> task_runner_;
   base::PlatformFile file_handle_;
   int result_;
   DISALLOW_COPY_AND_ASSIGN(OpenFileStreamHelper);
 };
 
 LocalFileReader::LocalFileReader(
-    base::MessageLoopProxy* file_thread_proxy,
+    base::TaskRunner* task_runner,
     const FilePath& file_path,
     int64 initial_offset,
     const base::Time& expected_modification_time)
-    : file_thread_proxy_(file_thread_proxy),
+    : task_runner_(task_runner),
       file_path_(file_path),
       initial_offset_(initial_offset),
       expected_modification_time_(expected_modification_time),
@@ -173,7 +173,7 @@ int LocalFileReader::Read(net::IOBuffer* buf, int buf_len,
 
 int LocalFileReader::GetLength(const net::Int64CompletionCallback& callback) {
   const bool posted = base::FileUtilProxy::GetFileInfo(
-      file_thread_proxy_, file_path_,
+      task_runner_, file_path_,
       base::Bind(&DidGetFileInfoForGetLength, callback,
                  expected_modification_time_));
   DCHECK(posted);
@@ -184,8 +184,8 @@ int LocalFileReader::Open(const OpenFileStreamCallback& callback) {
   DCHECK(!has_pending_open_);
   DCHECK(!stream_impl_.get());
   has_pending_open_ = true;
-  OpenFileStreamHelper* helper = new OpenFileStreamHelper(file_thread_proxy_);
-  const bool posted = file_thread_proxy_->PostTaskAndReply(
+  OpenFileStreamHelper* helper = new OpenFileStreamHelper(task_runner_);
+  const bool posted = task_runner_->PostTaskAndReply(
       FROM_HERE,
       base::Bind(&OpenFileStreamHelper::OpenAndVerifyOnFileThread,
                  base::Unretained(helper), file_path_,