Add extension system and PDF viewer to Qt WebEngine

Adds the Chromium extensiuon system to Qt WebEngine.
Currently, it only exposes internal APIs to the internal
PDF viewer extension.

To load a PDF, simply navigate to it.

This feature can be configured via the webengine-extensions flag
and is turned on by default.

Needs patch in Chromium 71-based to build.

Adaptations to 71-based from 69-based include:
  * Flag out update installation, add crx file dependency
  * Move PostTask over to 71-based implementation
  * Move extensions API providers to 71-based implementaion
  * Don't use custom guest view and mime handler view delegates
  * Adapt the URLRequestResourceBundleJob to match new interface
  * Move extension system initialization to end of profile constructor

Change-Id: I4fa5149057291bb5847f048534c11820cd7ff58c
Fixes: QTBUG-50556
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>

1 files changed, 15 insertions, 0 deletions

diff --git a/tools/buildscripts/repack_locales.py b/tools/buildscripts/repack_locales.py
index 103fdaf69..8f1ae190b 100755
--- a/tools/buildscripts/repack_locales.py
+++ b/tools/buildscripts/repack_locales.py
@@ -56,6 +56,8 @@ INT_DIR = None
 # The target platform. If it is not defined, sys.platform will be used.
 OS = None
 
+ENABLE_EXTENSIONS = False
+
 # Extra input files.
 EXTRA_INPUT_FILES = []
 
@@ -109,6 +111,14 @@ def calc_inputs(locale):
     inputs.append(os.path.join(SHARE_INT_DIR, 'chrome',
                   'chromium_strings_%s.pak' % locale))
 
+  if ENABLE_EXTENSIONS:
+    # For example:
+    # '<(SHARED_INTERMEDIATE_DIR)/extensions/strings/extensions_strings_da.pak
+    # TODO(jamescook): When Android stops building extensions code move this
+    # to the OS != 'ios' and OS != 'android' section below.
+    inputs.append(os.path.join(SHARE_INT_DIR, 'extensions', 'strings',
+                  'extensions_strings_%s.pak' % locale))
+
   # Add any extra input files.
   for extra_file in EXTRA_INPUT_FILES:
     inputs.append('%s_%s.pak' % (extra_file, locale))
@@ -158,6 +168,7 @@ def DoMain(argv):
   global INT_DIR
   global OS
   global EXTRA_INPUT_FILES
+  global ENABLE_EXTENSIONS
 
   parser = optparse.OptionParser("usage: %prog [options] locales")
   parser.add_option("-i", action="store_true", dest="inputs", default=False,
@@ -177,6 +188,9 @@ def DoMain(argv):
                          locale suffix and \".pak\" extension.")
   parser.add_option("-p", action="store", dest="os",
                     help="The target OS. (e.g. mac, linux, win, etc.)")
+  parser.add_option("--enable-extensions", action="store",
+                    dest="enable_extensions",
+                    help="Whether to include strings for extensions")
   options, locales = parser.parse_args(argv)
 
   if not locales:
@@ -188,6 +202,7 @@ def DoMain(argv):
   SHARE_INT_DIR = options.share_int_dir
   EXTRA_INPUT_FILES = options.extra_input
   OS = options.os
+  ENABLE_EXTENSIONS = options.enable_extensions == '1'
 
   if not OS:
     if sys.platform == 'darwin':