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temp file once we are done with it.
We observe ResourceHandle::OnRequestClosed as a signal of when we should delete
the temp file. This corresponds to the WebURLLoader being closed (or
canceled).
This patch also includes some helpers:
base/scoped_callback_factory.h
This class makes it easy to allocate Callbacks that hold a weak reference
back to the owning class. It works just like ScopedRunnableMethodFactory
but for Callbacks instead of RunnableMethods.
base/platform_file.h
Added a PassPlatformFile class that is useful for cases where a callback may
decide not to take ownership of a PlatformFile (as can happen when using
ScopedCallbackFactory).
chrome/file_system_proxy.{h,cc}
This class provides static methods for executing file system commands on the
FILE thread. It routes callbacks back to the originating thread to deliver
results (file handles, etc.). Note: this file declares a few functions that
are not yet used. I anticipate that we'll make use of these and add more
functions here to support the Pepper and OWP FileSystem APIs.
chrome/chrome_thread_relay.{h,cc}
This class is a helper class for proxying calls over to a background
ChromeThread and then returning results to the originating ChromeThread.
R=brettw
BUG=49789
TEST=(more to be added in third_party/ppapi/tests)
Review URL: http://codereview.chromium.org/2878062
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@54402 0039d316-1c4b-4281-b951-d872f2087c98
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