webos-image: gtest=v1.7.0

:Release Notes:
Upgrade gtest from 1.6.0 to 1.7.0

:Detailed Notes:
Significant changes:
- New: Google Test now implements a protocol to allow a test runner to detect that a test
  program has exited prematurely and report it as a failure (before it would be falsely reported as
  a success if the exit code is 0).
- Improvement: char pointers and char arrays are now escaped properly in failure messages.
- Improvement: failure summary in XML reports now includes file and line information.
- Compatibility fixes with C++ 11 and various platforms
Full changelog: https://code.google.com/p/googletest/source/browse/trunk/CHANGES

:Testing Performed:
All tests using gtest were passed successfully.

:QA Notes:

:Issues Addressed:
[BHV-244] upgrade gtest from 1.6.0 to 1.7.0
[BHV-1209] CCC: gtest=1.7.0

Open-webOS-DCO-1.0-Signed-off-by: Sergey Olendarenko <sergey.olendarenko@lge.com>

Change-Id: I65cd2554523ff7610d9dd73dae793720d8f257e8
Reviewed-on: https://g2g.palm.com/4798
Reviewed-by: DCO Verification
Build: Susan Montooth <susan.montooth@lge.com>
Tested-by: Susan Montooth <susan.montooth@lge.com>
Reviewed-by: Build Verification
Reviewed-by: Dmytro Bozhko <dmytro.bozhko@lge.com>
Tested-by: Dmytro Bozhko <dmytro.bozhko@lge.com>
Reviewed-by: Susan Montooth <susan.montooth@lge.com>