Added command line switches and UI (controlled via a build option)

build/common.gypi

 # Copyright (c) 2010 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # IMPORTANT:
 # Please don't directly include this file if you are building via gyp_chromium,
 # since gyp_chromium is automatically forcing its inclusion.
 {
   # Variables expected to be overriden on the GYP command line (-D) or by
   # ~/.gyp/include.gypi.
   'variables': {
     # Putting a variables dict inside another variables dict looks kind of
     # weird.  This is done so that 'host_arch', 'chromeos', etc are defined as
     # variables within the outer variables dict here.  This is necessary
     # to get these variables defined for the conditions within this variables
     # dict that operate on these variables (e.g., for setting 'toolkit_views',
     # we need to have 'chromeos' already set).
     'variables': {
       'variables': {
         'variables': {
           # Whether we're building a ChromeOS build.
           'chromeos%': 0,
 
           # Disable touch support by default.
-          'touchui%': 0,
+          'touchui%': 0,          

[evanm, 2011/02/01 19:39:59]

probably didn't mean to make this change

[DaveMoore, 2011/02/01 21:33:04]

Done.

         },
         # Copy conditionally-set variables out one scope.
         'chromeos%': '<(chromeos)',
         'touchui%': '<(touchui)',
 
         # To do a shared build on linux we need to be able to choose between
         # type static_library and shared_library. We default to doing a static
         # build but you can override this with "gyp -Dlibrary=shared_library"
         # or you can add the following line (without the #) to
         # ~/.gyp/include.gypi {'variables': {'library': 'shared_library'}}
@@ skipping 236 matching lines @@
 
     # These two variables can be set in GYP_DEFINES while running
     # |gclient runhooks| to let clang run a plugin in every compilation.
     # Only has an effect if 'clang=1' is in GYP_DEFINES as well.
     # Example:
     #     GYP_DEFINES='clang=1 clang_load=/abs/path/to/libPrintFunctionNames.dylib clang_plugin=print-fns' gclient runhooks
 
     'clang_load%': '',
     'clang_add_plugin%': '',
 
+    # Enable sampling based profiler.

[evanm, 2011/02/01 19:39:59]

Could you reference where to find more info on this?  Either reference a wiki
page here, or reference a wiki page in the header and point at the header?

[DaveMoore, 2011/02/01 21:33:04]

Done.

+    'profiling%': '0',
+
     # Override whether we should use Breakpad on Linux. I.e. for Chrome bot.
     'linux_breakpad%': 0,
     # And if we want to dump symbols for Breakpad-enabled builds.
     'linux_dump_symbols%': 0,
     # And if we want to strip the binary after dumping symbols.
     'linux_strip_binary%': 0,
     # Strip the test binaries needed for Linux reliability tests.
     'linux_strip_reliability_tests%': 0,
 
     # Enable TCMalloc.
@@ skipping 237 matching lines @@
       }],
       ['toolkit_views==1', {
         'defines': ['TOOLKIT_VIEWS=1'],
       }],
       ['chromeos==1', {
         'defines': ['OS_CHROMEOS=1'],
       }],
       ['touchui==1', {
         'defines': ['TOUCH_UI=1'],
       }],
+      ['profiling==1', {
+        'defines': ['ENABLE_PROFILING=1'],
+      }],
       ['remoting==1', {
         'defines': ['ENABLE_REMOTING=1'],
       }],
       ['proprietary_codecs==1', {
         'defines': ['USE_PROPRIETARY_CODECS'],
       }],
       ['enable_flapper_hacks==1', {
         'defines': ['ENABLE_FLAPPER_HACKS=1'],
       }],
       ['fastbuild!=0', {
@@ skipping 458 matching lines @@
               ['no_gc_sections==0', {
                 'ldflags': [
                   '-Wl,--gc-sections',
                 ],
               }],
               ['clang==1', {
                 'cflags!': [
                   '-fno-ident',
                 ],
               }],
+              ['profiling==1', {
+                'cflags': [
+                  '-fno-omit-frame-pointer',
+                  '-g',
+                ],
+              }],
             ]
           },
         },
         'variants': {
           'coverage': {
             'cflags': ['-fprofile-arcs', '-ftest-coverage'],
             'ldflags': ['-fprofile-arcs'],
           },
           'profile': {
             'cflags': ['-pg', '-g'],
@@ skipping 510 matching lines @@
     # and therefore SYMROOT, needs to be set at the project level.
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }
 
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