chrome: Enforce matching context for new user and incognito profiles

Selecting a new user or incognito profile via Chrome UI may result in
the creation of a new Profile object. If that occurs, we should find
or create a matching CefBrowserContext and CefRequestContext instead
of reusing an existing mismatched context (e.g. using the original
context for an incognito window would be a mismatch). If a new
CefRequestContext will be created the client can now implement
CefBrowserProcessHandler::GetDefaultRequestContextHandler() to
provide the handler for that context.

To test with a new user profile:
1. Click "Profile" icon, select "Add". Now you have 2+ profiles.
2. Click "Profile" icon, select the other user name to create a new
   window using the other user profile.
3. The new window should launch successfully.

To test with a new incognito profile:
1. Select "New Incognito window" from the 3-dot menu.
2. The new window should launch successfully.

To test DevTools window creation for the new profile:
1. Right-click in the new window, select Inspect.
2. The DevTools window should launch successfully.

include/capi/cef_browser_process_handler_capi.h

@@ -33,7 +33,7 @@
 // by hand. See the translator.README.txt file in the tools directory for
 // more information.
 //
-// $hash=f844d2a1e39d822129d0733f33c14d27481c36b7$
+// $hash=d958d5bed7f909f6313facef3440fb8ba07a5c01$
 //
 
 #ifndef CEF_INCLUDE_CAPI_CEF_BROWSER_PROCESS_HANDLER_CAPI_H_
@@ -44,6 +44,7 @@
 #include "include/capi/cef_client_capi.h"
 #include "include/capi/cef_command_line_capi.h"
 #include "include/capi/cef_preference_capi.h"
+#include "include/capi/cef_request_context_handler_capi.h"
 #include "include/capi/cef_values_capi.h"
 
 #ifdef __cplusplus
@@ -147,14 +148,26 @@ typedef struct _cef_browser_process_handler_t {
       int64_t delay_ms);
 
   ///
-  /// Return the default client for use with a newly created browser window. If
-  /// null is returned the browser will be unmanaged (no callbacks will be
-  /// executed for that browser) and application shutdown will be blocked until
-  /// the browser window is closed manually. This function is currently only
-  /// used with the chrome runtime.
+  /// Return the default client for use with a newly created browser window
+  /// (cef_browser_t object). If null is returned the cef_browser_t will be
+  /// unmanaged (no callbacks will be executed for that cef_browser_t) and
+  /// application shutdown will be blocked until the browser window is closed
+  /// manually. This function is currently only used with the Chrome runtime
+  /// when creating new browser windows via Chrome UI.
   ///
   struct _cef_client_t*(CEF_CALLBACK* get_default_client)(
       struct _cef_browser_process_handler_t* self);
+
+  ///
+  /// Return the default handler for use with a new user or incognito profile
+  /// (cef_request_context_t object). If null is returned the
+  /// cef_request_context_t will be unmanaged (no callbacks will be executed for
+  /// that cef_request_context_t). This function is currently only used with the
+  /// Chrome runtime when creating new browser windows via Chrome UI.
+  ///
+  struct _cef_request_context_handler_t*(
+      CEF_CALLBACK* get_default_request_context_handler)(
+      struct _cef_browser_process_handler_t* self);
 } cef_browser_process_handler_t;
 
 #ifdef __cplusplus

include/cef_api_hash.h

@@ -42,13 +42,13 @@
 // way that may cause binary incompatibility with other builds. The universal
 // hash value will change if any platform is affected whereas the platform hash
 // values will change only if that particular platform is affected.
-#define CEF_API_HASH_UNIVERSAL "60ecc3c751154b2b2b41e5d3ac0ccbeba588918d"
+#define CEF_API_HASH_UNIVERSAL "afb63c581ad6ef9b3d3ebed472cc66f75ce4647f"
 #if defined(OS_WIN)
-#define CEF_API_HASH_PLATFORM "7819cee8508a9b048ccfa80acea7351a5b549c45"
+#define CEF_API_HASH_PLATFORM "504dbb53deeebd11a16ea01533c5d9ecfa6be555"
 #elif defined(OS_MAC)
-#define CEF_API_HASH_PLATFORM "f2bb2e5a9d14dcad463fd3fc8ed4af16b6fe6196"
+#define CEF_API_HASH_PLATFORM "dc3cf1d007fec844ab287dac384c8b00366d46fc"
 #elif defined(OS_LINUX)
-#define CEF_API_HASH_PLATFORM "bcf76490ddea85c12ea8feeee9190ffe24dedcc6"
+#define CEF_API_HASH_PLATFORM "2b47d389c64db81913818b708b78868a22e65b66"
 #endif
 
 #ifdef __cplusplus

include/cef_browser_process_handler.h

@@ -42,6 +42,7 @@
 #include "include/cef_client.h"
 #include "include/cef_command_line.h"
 #include "include/cef_preference.h"
+#include "include/cef_request_context_handler.h"
 #include "include/cef_values.h"
 
 ///
@@ -139,14 +140,28 @@ class CefBrowserProcessHandler : public virtual CefBaseRefCounted {
   virtual void OnScheduleMessagePumpWork(int64_t delay_ms) {}
 
   ///
-  /// Return the default client for use with a newly created browser window. If
-  /// null is returned the browser will be unmanaged (no callbacks will be
-  /// executed for that browser) and application shutdown will be blocked until
-  /// the browser window is closed manually. This method is currently only used
-  /// with the chrome runtime.
+  /// Return the default client for use with a newly created browser window
+  /// (CefBrowser object). If null is returned the CefBrowser will be unmanaged
+  /// (no callbacks will be executed for that CefBrowser) and application
+  /// shutdown will be blocked until the browser window is closed manually. This
+  /// method is currently only used with the Chrome runtime when creating new
+  /// browser windows via Chrome UI.
   ///
   /*--cef()--*/
   virtual CefRefPtr<CefClient> GetDefaultClient() { return nullptr; }
+
+  ///
+  /// Return the default handler for use with a new user or incognito profile
+  /// (CefRequestContext object). If null is returned the CefRequestContext will
+  /// be unmanaged (no callbacks will be executed for that CefRequestContext).
+  /// This method is currently only used with the Chrome runtime when creating
+  /// new browser windows via Chrome UI.
+  ///
+  /*--cef()--*/
+  virtual CefRefPtr<CefRequestContextHandler>
+  GetDefaultRequestContextHandler() {
+    return nullptr;
+  }
 };
 
 #endif  // CEF_INCLUDE_CEF_BROWSER_PROCESS_HANDLER_H_