Retry to checkin a version of gmock, modified to use our boost_tuple in VS2005.

testing/README.chromium

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+We include a snapshot of gmock from http://googlemock.googlecode.com/svn/trunk
+with chromium.patch applied.
+
+Current revision: 157
+
+
+-- HOW TO USE --
+
+If you are unfamiliar with gmock, there is an example of how to write a test
+based on gmock in base/gmock_unittest.cc.  To use gmock, just add a dependency
+onto testing/gmock.gyp:gmock in your gyp target.
+
+For more general informaiton, there is a lot of good documentation availble on
+the googlemock website:
+
+  http://code.google.com/p/googlemock/
+
+In particular, the "For Dummies" guide is a good place to start.  The
+"CheatSheet" and "CookBook" are better as references.
+
+
+-- RECREATING PACKAGE --
+
+Gmock requires tr1 tuple.  However, Visual Studio 2005 does not include
+tr1 tuple, so a version of boost tuple was added into the third_party
+tree for chromium.  Our version of gmock has been patched to search for
+this version of tuple inside our source tree.
+
+chromium.patch modifies gmock/include/gmock/internal/gmock-port.h so that
+for _MSC_VER < 1500 (anything newer than Visual Studio 2008), boost tuple
+is loaded from boost/tr1/tr1/tuple.
+
+To recreate this install, do the following:
+
+ *1) Checkout a copy from svn trunk using --ignore-externals to avoid
+     getting an extra copy of gtest.  Use the following command:
+       svn export --ignore-externals \
+           http://googlemock.googlecode.com/svn/trunk/ gmock
+  2) Patch it with chromium.patch.
+
+* Pass -r [revision number] to svn export if you want a specific revision.
+The current revision of the source is listed at the top of the README.
+
+
+-- ALTERNATIVES TO PATCHING --
+
+The patching of gmock to use boost in VS2005 was settled upon as the lowest
+impact solution for getting gmock working in VS2005.  Patching gmock trades
+making some assumptions regarding the internal implementations of gmock
+and boost for a simple, easy to underatnd, implementation that provides
+relatively good insulation for the rest of the build from the boost dependency.
+
+Alternate soltuions are:
+  1) Drop support for VS2005 -- too heavy-handed.
+  2) Add a "tuple" file parallel to gmock-port.h  -- still makes assumptions
+     about boost's structure.
+  3) Add boost/tr1/tr1 into the include path -- dirties the include path for
+     all dependencies.