Update Breakpad to r825 to pick up some clang warning-related fixes

Update Breakpad to r825 to pick up some clang warning-related fixes:

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r825 | mark@chromium.org | 2011-08-11 09:47:38 -0400 (Thu, 11 Aug 2011) | 6 lines

The process_id field is unsigned, so we need this cast in c++0x.

Patch by Rafael Ávila de Espí­ndola <respindola@mozilla.com>;

https://bugzilla.mozilla.org/show_bug.cgi?id=677644
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r824 | mark@chromium.org | 2011-08-11 09:45:30 -0400 (Thu, 11 Aug 2011) | 8 lines

The first field in a MDLocationDescriptor is a u_int32_t, so change this cast
to the correct type. This fixes an error newer clang versions find in c++ 0x
mode.

Patch by Rafael Ávila de Espí­ndola <respindola@mozilla.com>;

https://bugzilla.mozilla.org/show_bug.cgi?id=677641
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r823 | mark@chromium.org | 2011-08-11 09:40:13 -0400 (Thu, 11 Aug 2011) | 2 lines

Fix clang warnings.
Review URL: http://breakpad.appspot.com/298002
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r822 | mark@chromium.org | 2011-08-11 09:39:44 -0400 (Thu, 11 Aug 2011) | 3 lines

Zero out the entire context on MD5_Final, not just the number of bytes in a
pointer.
Review URL: http://breakpad.appspot.com/298001
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Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=96381

[Mark Mentovai, 2011-08-11 14:12:07]

TBR (DEPS)

[Nico, 2011-08-11 14:44:38]

lgtm