Added cpplint.py output format for eclipse

Added cpplint.py output format for eclipse

BUG=

[mcasas, 2013-05-28 09:35:40]

To integrate in Eclipse, best is if the output of cpplint.py looks something
like: [file:line: warning: lalala] -with no brackets-, whereas now it looks like
[file:line: lalala]
so I added an output format called "eclipse" where the "warning" is added. 
Later I'll put some text in the chromium LinuxEclipseDev entry.

[iannucci, 2013-05-28 18:35:16]

owner lgtm

[iannucci, 2013-05-28 18:35:57]

On 2013/05/28 18:35:16, iannucci wrote:
> owner lgtm

*owner for depot_tools, that is... I'm not familiar with cpplint.py in
particular.

[Elliot Glaysher, 2013-05-28 21:33:31]

On 2013/05/28 18:35:57, iannucci wrote:
> On 2013/05/28 18:35:16, iannucci wrote:
> > owner lgtm
> 
> *owner for depot_tools, that is... I'm not familiar with cpplint.py in
> particular.

lgtm

I'll commit this upstream this time, but in the future, please create a code
review against the upstream
http://google-styleguide.googlecode.com/svn/trunk/cpplint/ repository, and then
roll that to depot_tools.

[commit-bot: I haz the power, 2013-08-22 09:42:09]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/mcasas@chromium.org/16140002/1

[commit-bot: I haz the power, 2013-08-22 09:42:18]

Failed to apply patch for depot_tools/cpplint.py:
While running patch -p1 --forward --force --no-backup-if-mismatch;
  patching file depot_tools/cpplint.py
  Hunk #1 succeeded at 878 with fuzz 2 (offset 62 lines).
  Hunk #2 FAILED at 3317.
  1 out of 2 hunks FAILED -- saving rejects to file depot_tools/cpplint.py.rej

Patch:       depot_tools/cpplint.py
Index: cpplint.py
diff --git depot_tools/cpplint.py depot_tools/cpplint.py
index
f95be89135adebd5206db85843ce9f5ac7ba49a9..ec7cbc4ad008308b6e056741c7ab34aecb9293d8
100755
--- a/depot_tools/cpplint.py
+++ b/depot_tools/cpplint.py
@@ -816,6 +816,9 @@ def Error(filename, linenum, category, confidence, message):
     if _cpplint_state.output_format == 'vs7':
       sys.stderr.write('%s(%s):  %s  [%s] [%d]\n' % (
           filename, linenum, message, category, confidence))
+    elif _cpplint_state.output_format == 'eclipse':
+      sys.stderr.write('%s:%s: warning: %s  [%s] [%d]\n' % (
+          filename, linenum, message, category, confidence))
     else:
       sys.stderr.write('%s:%s:  %s  [%s] [%d]\n' % (
           filename, linenum, message, category, confidence))
@@ -3314,8 +3317,8 @@ def ParseArguments(args):
     if opt == '--help':
       PrintUsage(None)
     elif opt == '--output':
-      if not val in ('emacs', 'vs7'):
-        PrintUsage('The only allowed output formats are emacs and vs7.')
+      if not val in ('emacs', 'vs7', 'eclipse'):
+        PrintUsage('The only allowed output formats are emacs, vs7 and
eclipse.')
       output_format = val
     elif opt == '--verbose':
       verbosity = int(val)