Linux: Load additional binaries from DIR_ASSETS (fixes issue #1936)

This adds *.pak, locales/*.pak , chrome-sandbox, libGLESv2.so, libEGL.so and
swiftshader/*.so to the list of binaries that will be loaded from the libcef.so
directory instead of the executable directory by default.

libcef/common/main_delegate.cc

@@ -139,7 +139,7 @@ void OverrideChildProcessPath() {
 
 base::FilePath GetResourcesFilePath() {
   base::FilePath pak_dir;
-  base::PathService::Get(base::DIR_MODULE, &pak_dir);
+  base::PathService::Get(base::DIR_ASSETS, &pak_dir);
   return pak_dir;
 }
 
@@ -265,8 +265,9 @@ bool IsScaleFactorSupported(ui::ScaleFactor scale_factor) {
 }
 
 #if defined(OS_LINUX)
-// Look for the *.dat and *.bin files next to libcef instead of the exe on
+// Look for binary files (*.bin, *.dat, *.pak, chrome-sandbox, libGLESv2.so,
-// Linux. This is already the default on Windows.
+// libEGL.so, locales/*.pak, swiftshader/*.so) next to libcef instead of the exe
+// on Linux. This is already the default on Windows.
 void OverrideAssetPath() {
   Dl_info dl_info;
   if (dladdr(reinterpret_cast<const void*>(&OverrideAssetPath), &dl_info)) {

patch/patch.cfg

@@ -418,6 +418,11 @@ patches = [
     # https://bitbucket.org/chromiumembedded/cef/issues/2495
     'name': 'message_pump_mac_2495',
   },
+  {
+    # Linux: Load binaries from DIR_ASSETS.
+    # https://bitbucket.org/chromiumembedded/cef/issues/1936
+    'name': 'linux_assets_path_1936',
+  },
   {
     # Windows: Fix jumbo build error in AccessibilityTreeFormatterWin
     # https://bugs.chromium.org/p/chromium/issues/detail?id=939668

patch/patches/linux_assets_path_1936.patch

@@ -0,0 +1,35 @@
+diff --git sandbox/linux/suid/client/setuid_sandbox_host.cc sandbox/linux/suid/client/setuid_sandbox_host.cc
+index 7a103bf7f13c..cd3167ebed09 100644
+--- sandbox/linux/suid/client/setuid_sandbox_host.cc
++++ sandbox/linux/suid/client/setuid_sandbox_host.cc
+@@ -120,7 +120,7 @@ bool SetuidSandboxHost::IsDisabledViaEnvironment() {
+ base::FilePath SetuidSandboxHost::GetSandboxBinaryPath() {
+   base::FilePath sandbox_binary;
+   base::FilePath exe_dir;
+-  if (base::PathService::Get(base::DIR_EXE, &exe_dir)) {
++  if (base::PathService::Get(base::DIR_ASSETS, &exe_dir)) {
+     base::FilePath sandbox_candidate = exe_dir.AppendASCII("chrome-sandbox");
+     if (base::PathExists(sandbox_candidate))
+       sandbox_binary = sandbox_candidate;
+diff --git ui/gl/init/gl_initializer_x11.cc ui/gl/init/gl_initializer_x11.cc
+index e3c481b97d89..5fde4a0bb388 100644
+--- ui/gl/init/gl_initializer_x11.cc
++++ ui/gl/init/gl_initializer_x11.cc
+@@ -88,7 +88,7 @@ bool InitializeStaticEGLInternal(GLImplementation implementation) {
+   if (implementation == kGLImplementationSwiftShaderGL) {
+ #if BUILDFLAG(ENABLE_SWIFTSHADER)
+     base::FilePath module_path;
+-    if (!base::PathService::Get(base::DIR_MODULE, &module_path))
++    if (!base::PathService::Get(base::DIR_ASSETS, &module_path))
+       return false;
+     module_path = module_path.Append("swiftshader/");
+ 
+@@ -100,7 +100,7 @@ bool InitializeStaticEGLInternal(GLImplementation implementation) {
+   } else if (cmd->GetSwitchValueASCII(switches::kUseGL) ==
+              kGLImplementationANGLEName) {
+     base::FilePath module_path;
+-    if (!base::PathService::Get(base::DIR_MODULE, &module_path))
++    if (!base::PathService::Get(base::DIR_ASSETS, &module_path))
+       return false;
+ 
+     glesv2_path = module_path.Append(kGLESv2ANGLELibraryName);

tools/distrib/linux/README.standard.txt

@@ -5,8 +5,8 @@ cmake       Contains CMake configuration files shared by all targets.
 
 Debug       Contains libcef.so and other components required to run the debug
             version of CEF-based applications. By default these files should be
-            placed in the same directory as the executable and will be copied
+            placed in the same directory as libcef.so and will be copied there
-            there as part of the build process.
+            as part of the build process.
 
 include     Contains all required CEF header files.
 
@@ -15,8 +15,8 @@ libcef_dll  Contains the source code for the libcef_dll_wrapper static library
 
 Release     Contains libcef.so and other components required to run the release
             version of CEF-based applications. By default these files should be
-            placed in the same directory as the executable and will be copied
+            placed in the same directory as libcef.so and will be copied there
-            there as part of the build process.
+            as part of the build process.
 
 Resources   Contains resources required by libcef.so. By default these files
             should be placed in the same directory as libcef.so and will be