Revert "Use the same Clang revision as v8 uses"

README.md

Index: README.md
diff --git a/README.md b/README.md
index 89096cd00df01dad8632eb23933b5999da75b92d..24fc1f3d7b3ef33f9f27c33644ded4368e61aecd 100644
--- a/README.md
+++ b/README.md
@@ -2,13 +2,8 @@
 
 ## News
 
-As of 2016-02-04, the XFA branch is deprecated.  Instead, see
-[the section on configuration](#BuildConfig) below.
-
-As of 2016-04-15, Visual Studio toolchain from depot_tools will be used as the
-default. Set DEPOT_TOOLS_WIN_TOOLCHAIN=0 if you need to use system toolchain.
-See [Windows development subsection](#WinDev) for details.
-
+As of 2016-02-04, the XFA branch is deprecated.  Instead, see the section on
+configuration below.
 
 ## Prerequisites
 
@@ -18,34 +13,6 @@ the gclient utilty needed below).
 
 Also install Python, Subversion, and Git and make sure they're in your path.
 
-###<a name="WinDev"></a> Windows development
-
-PDFium uses similar Windows toolchain as Chromium:
-
-#### Open source contributors:
-Visual Studio 2015 Update 2 or later is highly recommended.
-
-Run `set DEPOT_TOOLS_WIN_TOOLCHAIN=0`, or set that variable in your global
-environment.
-
-Compilation is done through ninja, **not** Visual Studio.
-
-#### Google employees
-
-Run: `download_from_google_storage --config` and follow the
-authentication instructions. **Note that you must authenticate with your
-@google.com credentials**. Enter "0" if asked for a project-id.
-
-Once you've done this, the toolchain will be installed automatically for
-you in Step 3, below (near the end of the step).
-
-The toolchain will be in `depot_tools\win_toolchain`, and windbg can be
-found in `depot_tools\win_toolchain\vs2013_files\win8sdk\Debuggers`.
-
-If you want the IDE for debugging and editing, you will need to install
-it separately, but this is optional and not needed to build PDFium.
-
-
 ## Get the code
 
 The name of the top-level directory does not matter. In our examples, we use
@@ -79,7 +46,7 @@ on Linux, sln files on Windows, and xcodeproj files on Mac. To do so, set the
 GYP\_GENERATORS environment variable appropriately (e.g. "make", "msvs", or
 "xcode") before running the above command.
 
-###<a name="BuildConfig"></a> Selecting build configuration
+### Selecting build configuration
 
 PDFium may be built either with or without JavaScript support, and with
 or without XFA forms support.  Both of these features are enabled by