Update to Chromium revision 0bfd25d4 (#381305)

- Delete include/cef_runnable.h (issue #1336).
- Build the cef_unittests target using all Chromium headers. Add a
  USING_CHROMIUM_INCLUDES define and libcef_dll_wrapper_unittests
  target to support this. This change avoids compile errors due to
  the divergence of CEF and Chromium base/ header implementations.
  The libcef_dll_wrapper sources must now compile successfully with
  both CEF and Chromium base/ headers (issue #1632).
- The onbeforeunload message specified via JavaScript is no longer
  passed to the client (see http://crbug.com/587940).

patch/patches/prefs_tab_helper_1680.patch

@@ -1,17 +1,18 @@
 diff --git prefs_tab_helper.cc prefs_tab_helper.cc
-index 36d6fe9..a875d1e 100644
+index f8ca619..872050c 100644
 --- prefs_tab_helper.cc
 +++ prefs_tab_helper.cc
-@@ -12,7 +12,7 @@
+@@ -11,8 +11,8 @@
+ #include <string>
  
  #include "base/command_line.h"
++#include "base/lazy_instance.h"
  #include "base/macros.h"
 -#include "base/memory/singleton.h"
-+#include "base/lazy_instance.h"
- #include "base/metrics/field_trial.h"
  #include "base/strings/string_number_conversions.h"
  #include "base/strings/string_util.h"
-@@ -431,12 +431,10 @@ class PrefWatcherFactory : public BrowserContextKeyedServiceFactory {
+ #include "base/strings/stringprintf.h"
+@@ -423,12 +423,10 @@ class PrefWatcherFactory : public BrowserContextKeyedServiceFactory {
          GetInstance()->GetServiceForBrowserContext(profile, true));
    }
  
@@ -26,7 +27,7 @@ index 36d6fe9..a875d1e 100644
  
    PrefWatcherFactory() : BrowserContextKeyedServiceFactory(
        "PrefWatcher",
-@@ -457,6 +455,18 @@ class PrefWatcherFactory : public BrowserContextKeyedServiceFactory {
+@@ -449,6 +447,18 @@ class PrefWatcherFactory : public BrowserContextKeyedServiceFactory {
    }
  };