Revert 136728 - Disable precompiled headers when using 2010 on an Official build.

(Reverted due to build errors on Win Builder 2010 (dbg):
 NameError: name 'buildtype' is not defined while evaluating condition 'OS=="win"
 and MSVS_VERSION=="2010" and buildtype!="Official"' in src\build\all.gyp while
 trying to load src\build\all.gyp)

bug=127875
R=bradnelson

Review URL: https://chromiumcodereview.appspot.com/10392063

[email protected]
Review URL: https://chromiumcodereview.appspot.com/10387096

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@136735 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/build/common.gypi b/build/common.gypi
index de062be..3f3d972 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -440,8 +440,8 @@
           'ui_compositor_image_transport%': 0,
         }],
 
-        # Turn precompiled headers on by default for VS2010 non-Official builds.
-        ['OS=="win" and MSVS_VERSION=="2010" and buildtype!="Official"', {
+        # Turn precompiled headers on by default for VS 2010.
+        ['OS=="win" and MSVS_VERSION=="2010"', {
           'chromium_win_pch%': 1
         }],