Cherry pick r1344 into chrome_37 branch

Original commit message:
> Unhook current Breakpad object after handling uncaught NSException.
> After handling an uncaught NSException, release the Breakpad object
> so there will not be a second crash dump logged.
>
> Prior to this change, for every uncaught NSException handled through
> the Breakpad::UncaughtExceptionHandler(), a second crash without
> any useful information (generally __cxa_rethrow and std::__terminate)
> is recorded.
>
> R=qsr@chromium.org
>
> Review URL: https://breakpad.appspot.com/9664002
>
> Patch from Peter Lee <pkl@chromium.org>.

R=mark@chromium.org

Review URL: https://breakpad.appspot.com/1704002

git-svn-id: http://google-breakpad.googlecode.com/svn/branches/chrome_37@1357 4c0a9323-5329-0410-9bdc-e9ce6186880e

src/client/ios/Breakpad.mm

@@ -258,6 +258,7 @@ void Breakpad::UncaughtExceptionHandler(NSException *exception) {
   if (current_breakpad_) {
     current_breakpad_->HandleUncaughtException(exception);
   }
+  BreakpadRelease(current_breakpad_);
 }
 
 //=============================================================================

src/client/linux/minidump_writer/minidump_writer.cc

@@ -1758,23 +1758,6 @@ class MinidumpWriter {
       space_left -= info_len;
     }
 
-#ifdef __ANDROID__
-    // On Android, try to get the build fingerprint and append it.
-    // Fail gracefully because there is no guarantee that the system
-    // property will always be available or accessible.
-    char fingerprint[PROP_VALUE_MAX];
-    int fingerprint_len = __system_property_get("ro.build.fingerprint",
-                                                fingerprint);
-    // System property values shall always be zero-terminated.
-    // Be paranoid and don't trust the system.
-    if (fingerprint_len > 0 && fingerprint_len < PROP_VALUE_MAX) {
-      const char* separator = " ";
-      if (!first_item)
-        my_strlcat(buf, separator, sizeof(buf));
-      my_strlcat(buf, fingerprint, sizeof(buf));
-    }
-#endif
-
     MDLocationDescriptor location;
     if (!minidump_writer_.WriteString(buf, 0, &location))
       return false;