Add breakpad support (issue #1131).

- General usage instructions are available at https://sites.google.com/a/chromium.org/dev/developers/testing/webkit-layout-tests/using-breakpad-with-content-shell.
- Mac: Generate "Chromium Embedded Framework.framework" using a new cef_framework target (the libcef target is now only used on Windows and Linux). Rename "Libraries/libcef.dylib" to "Chromium Embedded Framework". Distribute Release and Debug builds of the "Chromium Embedded Framework.framework" folder as part of the binary distribution.
- Mac: Fix the Xcode target compiler setting for the binary distribution so that it no longer needs to be set manually.

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@1524 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

libcef/common/main_delegate.h

@@ -39,6 +39,9 @@ class CefMainDelegate : public content::ContentMainDelegate {
       const std::string& process_type,
       const content::MainFunctionParams& main_function_params) OVERRIDE;
   virtual void ProcessExiting(const std::string& process_type) OVERRIDE;
+#if defined(OS_POSIX) && !defined(OS_ANDROID) && !defined(OS_MACOSX)
+  virtual void ZygoteForked() OVERRIDE;
+#endif
   virtual content::ContentBrowserClient* CreateContentBrowserClient() OVERRIDE;
   virtual content::ContentRendererClient*
       CreateContentRendererClient() OVERRIDE;