Adding crash reporting on Linux for the GPU process....

chrome/browser/crash_handler_host_linux.h

Index: chrome/browser/crash_handler_host_linux.h
===================================================================
--- chrome/browser/crash_handler_host_linux.h	(revision 73306)
+++ chrome/browser/crash_handler_host_linux.h	(working copy)
@@ -79,6 +79,23 @@
   DISALLOW_COPY_AND_ASSIGN(CrashHandlerHostLinux);
 };
 
+class GpuCrashHandlerHostLinux : public CrashHandlerHostLinux {
+ public:
+  // Returns the singleton instance.
+  static GpuCrashHandlerHostLinux* GetInstance();
+
+ private:
+  friend struct DefaultSingletonTraits<GpuCrashHandlerHostLinux>;
+  GpuCrashHandlerHostLinux();
+  virtual ~GpuCrashHandlerHostLinux();
+
+#if defined(USE_LINUX_BREAKPAD)
+  virtual void SetProcessType();
+#endif
+
+  DISALLOW_COPY_AND_ASSIGN(GpuCrashHandlerHostLinux);
+};
+
 class PluginCrashHandlerHostLinux : public CrashHandlerHostLinux {
  public:
   // Returns the singleton instance.